WO2004097082A1 - 蛋白質結晶化条件スクリーニング装置 - Google Patents
蛋白質結晶化条件スクリーニング装置 Download PDFInfo
- Publication number
- WO2004097082A1 WO2004097082A1 PCT/JP2004/006147 JP2004006147W WO2004097082A1 WO 2004097082 A1 WO2004097082 A1 WO 2004097082A1 JP 2004006147 W JP2004006147 W JP 2004006147W WO 2004097082 A1 WO2004097082 A1 WO 2004097082A1
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- WIPO (PCT)
- Prior art keywords
- crystallization
- dispensing
- protein
- solution
- dispensing head
- Prior art date
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/68—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0077—Screening for crystallisation conditions or for crystal forms
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/54—Organic compounds
- C30B29/58—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B7/00—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B7/00—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions
- C30B7/02—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions by evaporation of the solvent
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
- G01N35/04—Details of the conveyor system
- G01N2035/0401—Sample carriers, cuvettes or reaction vessels
- G01N2035/0418—Plate elements with several rows of samples
- G01N2035/0425—Stacks, magazines or elevators for plates
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
- G01N35/028—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations having reaction cells in the form of microtitration plates
Definitions
- the present invention screens crystallization conditions for proteins in a protein solution.
- the present invention relates to an apparatus for screening protein crystallization conditions.
- the apparatus of the present invention can be used for, for example, production of protein crystals, etc., in addition to field cleaning under protein crystallization conditions.
- a vapor diffusion method is known as a method for crystallizing the protein.
- a solvent component evaporating from a protein solution containing a protein to be crystallized is absorbed by a crystallization solution contained in the same container, so that the protein solution is kept in a supersaturated state and crystals are gradually formed.
- an object of the present invention is to provide a protein crystallization condition screening apparatus capable of efficiently performing a protein crystallization condition screening by a vapor diffusion method using a sitting drop method.
- a protein crystallization condition screening apparatus of the present invention comprises: A dispensing stage in which a crystallization container is set, comprising a plurality of solution storage units each having a liquid holding unit for holding a protein solution from below and a storage unit for storing a crystallization solution. And dispensing a crystallization solution into the storage portion and dispensing a protein solution into the solution holding portion of the solution storage portion of the crystallization container set on the dispensing stage. Means, a sealing means for sealing the solution storage portion into which the crystallization solution and the protein solution are dispensed, and a plurality of the crystallization containers having the solution storage portion sealed therein in a predetermined environment.
- a crystallization container accommodating means, a protein crystal detecting means for detecting a protein crystal generated in the protein solution in the closed solution accommodating section, and the crystallization container is provided with the dispensing stage, the sealing means, A crystallization container transporting unit that transports the crystallization container to at least one of the crystallization container housing unit and the protein crystal detection unit.
- ADVANTAGE OF THE INVENTION According to the screening apparatus of this invention, screening of the protein crystallization conditions by the vapor diffusion method using the sitting drop method can be efficiently performed.
- the apparatus of the present invention can be used not only for screening protein crystallization conditions, but also for producing protein crystals, for example.
- FIG. 1 is a perspective view of a protein crystallization condition screening apparatus according to one embodiment of the present invention.
- FIG. 2 is a transparent perspective view of the apparatus for producing a protein crystallization plate according to one embodiment of the present invention.
- FIG. 3 is a perspective view of a crystallization plate used in one embodiment of the present invention.
- FIG. 4 is a partial cross-sectional view of a crystallization plate used in one embodiment of the present invention.
- FIG. 5 is a front view of a dispensing head part of the protein crystallization plate producing apparatus according to one embodiment of the present invention.
- FIGS. 6A, 6B, and 6C are explanatory diagrams of a dispensing operation using the apparatus for producing a protein crystallization plate according to the present invention, which is applied in a cold mode.
- FIG. 7 is a block diagram showing a configuration of a control system of the apparatus for producing a protein crystallization plate according to one embodiment of the present invention.
- FIG. 8 is a flow chart showing a protein crystallization container producing operation by the protein crystallization plate producing apparatus according to one embodiment of the present invention.
- FIG. 9 is a transparent perspective view of the protein crystal detection device according to one embodiment of the present invention.
- FIG. 10 is a cross-sectional view of a protein crystal detection device according to one embodiment of the present invention.
- FIG. 11 is a partial cross-sectional view of an observation unit of the protein crystal detection device according to one embodiment of the present invention.
- FIG. 12 is a block diagram showing a configuration of a control system of the protein crystal detection device according to one embodiment of the present invention.
- FIG. 13 is a flowchart of an observation operation by the protein crystal detection device according to one embodiment of the present invention.
- FIG. 14 is a flowchart of a protein crystal detection process by the protein crystal detection device according to one embodiment of the present invention.
- the dispensing means preferably includes a crystallization solution dispensing head for dispensing the crystallization solution and a protein solution dispensing head for dispensing the protein solution.
- the crystallization solution dispensing head comprises: a first dispensing head for dispensing the crystallization solution into the storage unit; and the crystallization solution into the liquid holding unit. It is preferred to have a second dispensing head for dispensing. In the screening device of the present invention, the second dispensing head is It is preferable that the crystallization solution be sucked from the liquid storage part and dispensed to the liquid holding part.
- the dispensing means includes: a single dispensing head on which the crystallization solution dispensing head and the protein solution dispensing head are mounted; And a dispensing head moving means for moving the dispensing head with respect to the dispensing stage.
- the dispensing means includes a single dispensing head to which the first dispensing head, the second dispensing head, and the protein solution dispensing head are attached. And a dispensing head moving means for moving the dispensing head relative to the dispensing stage.
- the crystallization vessel transport means includes a first transport means to at least one of the dispensing stage and the sealing means, and a second transport means to a crystallization solution storage means. Is preferred.
- the crystallization container housing means includes: a constant temperature chamber for housing the crystallization container under a predetermined environment; and a protein arranged in the constant temperature chamber for detecting a protein crystal generated in the crystallization container. It is preferable that the second transporting means transports the crystallization vessel in a constant temperature chamber.
- a computer program according to the present invention is a computer program, wherein the screening device of the present invention is controlled by a computer, and is capable of executing a protein crystallization plate producing operation in the device.
- Transporting the plate to the dispensing stage reading the dispensing information, dispensing the plate to the plate by the dispensing means based on the information, A step of recognizing; a step of transporting the plate after the dispensing process by the transporting means to the sealing means; and a step of sealing the plate by the sealing means.
- another computer program of the present invention is a computer program in which the screening device of the present invention is controlled by a computer and can execute observation of protein crystals in a protein crystallization plate in the device.
- the step of detecting a protein crystal based on the image includes a step of performing image processing on the image; a step of determining crystallization based on the processed image; Recording at least one of information on a plate, information on the jewel, the image and observation time.
- the protein crystallization condition screening device of the present invention can be controlled by a computer, and is preferably a device controlled by the computer program of the present invention.
- the protein crystallization condition screening apparatus of the present invention can be used as a protein crystal production apparatus.
- the protein crystallization condition screening device 1 screens the protein crystallization conditions in the sitig drop method, which is one type of protein crystallization method using the vapor diffusion method. 2 and a protein crystal detector 5 are connected.
- the protein crystallization plate preparation device 2 (crystallization container preparation device) performs a crystallization plate preparation process in which crystallization plates, which are crystallization containers, are set to predetermined crystallization conditions by performing a dispensing operation. Do.
- the protein crystal detector 5 accommodates the plurality of crystallization containers thus prepared in a predetermined environment, and performs protein crystal detection on these crystallization containers.
- the protein crystallization plate preparation device 2 and the protein crystal detection device 5 have a configuration in which box-shaped housings 3 and 6 accommodate respective functional units to be described later.
- Case 3 has a window 3a for observation and internal access, a component supply door 3b for replenishing consumable parts, and a control panel 4.
- Housing 6 maintains the internal environmental temperature at the set temperature.
- a door 6a for internal access, from the front, a small door 6b for operation and inspection, a window 6b for internal inspection, and a control panel 7 are provided. .
- An opening for transporting the container is provided at the boundary between the casings 3 and 6, as described later.
- the crystallization plate prepared by the protein crystallization plate preparation device 2 is directly carried into the protein crystal detection device 5. You can do it.
- the upper surface of the base 10 is a work area 11 where various processes and operations are performed on the crystallization plate.
- a stock portion 12 for storing consumables is provided on a front side surface of the base 10.
- the stock section 12 has a plate stock section 13 and two rack stock sections 14 and 15.
- the plate stock section 13 has an elevating plate 13a.
- a microplate 16 for crystallization (hereinafter simply abbreviated as "crystallization plate 16").
- crystallization plate 16 is a crystallization container used to crystallize the protein in the protein solution.
- FIGS. As shown in FIG. 3, the crystallization plate 16 has a plurality of wells 16a formed in a lattice.
- the well 16a is a so-called caldera-shaped liquid storage recess in which a cylindrical liquid holding part 16b is provided at the center of the circular recess, and the well 16a contains the crystallization target.
- a different sample that is, a protein solution 26a containing the protein to be crystallized, and a crystallization solution 25a used for crystallization are dispensed.
- the size of the crystallization plate 16 is not particularly limited.
- a standardized size plate can be used. Examples of the standard include the SBS standard.
- the size of the hole 16a is not particularly limited, but is, for example, a diameter of 1 Omm to 2 Omm, and the size of the liquid holding portion 16b is not particularly limited. It is half the diameter of 16a.
- Figure 4 shows an example of the face of one well 16a containing these samples. are doing.
- a droplet-like protein solution 26a is held in a pocket provided at the top of the liquid holding section 16b, and surrounds the liquid holding section 16b.
- the crystallization solution 25a is stored in the ring-shaped storage portion 16c.
- a well 16a is a solution having a liquid holding part 16b for holding the protein solution to be crystallized from below in a mounted state and a liquid storage part 16c for storing the crystallization solution 25a. It is a storage section.
- a predetermined amount of the crystallization solution 25a is taken out of the storage part 16c and dispensed into the protein solution 26a held in the liquid holding part 16b.
- a sealing member 56 for sealing is attached to the upper surface of each well 16a (see FIG. 3).
- the crystallization plate 16 in this state is stored under a predetermined temperature atmosphere to evaporate the solvent component in the protein solution 26a, thereby increasing the protein concentration of the protein solution 26a to a supersaturated state. Produces protein crystals. At this time, the evaporation of the solvent from the protein solution 26a progresses slowly while maintaining the equilibrium between the solvent evaporating from the protein solution 26a and the vapor absorbed by the crystallization solution 25a. Stable crystal formation is performed.
- the rack stock sections 14 and 15 in Fig. 2 are equipped with lifting plates 14a and 15a, and the tip racks 17 and 18 are crystallized on the lifting plates 14a and 15a. Like the plate 16, it is stored in a stacked state, and is taken out by the transport unit 20.
- the tip racks 17 and 18 hold a plurality of disposable dispensing tubes used for dispensing the crystallization solution 25a in a dispensing operation in a lattice arrangement. As described below, two types of large and small dispensing tips are used for dispensing the crystallization solution 25a, and the tip racks 17 and 18 are small-sized and large-sized crystallization solution dispensing tips, respectively. Is stored. The crystallization plate 16 and the tip racks 17 and 18 are transported to the work area 11 by the transport unit 20 described later, where the dispensing tips taken out of the tip racks 17 and 18 are transferred. Used for dispensing operations. The used dispensing tip is returned to tip racks 17 and 18. The stock section 12 is provided with a disposal box 19 for collecting used consumable parts. The tip racks 17 and 18 containing used dispensing tips are provided in the transport section 20. Is discarded in this waste box 19.
- the transport unit 20 will be described. Above the base 10, two X-axis mechanisms 24 are arranged in the X direction.
- the Y-axis mechanism 23 laid on the X-axis mechanism 24 has a Z0-axis mechanism 2 2 Is installed.
- a transport head 21 is coupled to a shaft portion 22 a extending downward from the shaft mechanism 22. By driving the X-axis mechanism 24, the Y-axis mechanism 23, and the Z0-axis mechanism 22, the transport head 21 moves in the X, Y, and Z0 directions within the work area 11, and The crystallization plate 16 and tip racks 17 and 18 are clamped and transported.
- a dispensing stage 11a is provided substantially at the center of the work area 11, and the crystallization plate 16 removed from the stock unit 12 is set on the dispensing stage 11a.
- tip racks 17 and 18 and a nozzle rack 27 accommodating a protein solution dispensing nozzle described later are placed.
- a protein solution supply reservoir 26 containing the protein solution 26a to be screened and the crystallization solution 25a used for crystallization are stored.
- the crystallization solution supply reservoir 25 is placed on the crystallization solution supply reservoir 25.
- the crystallization plate preparation process consists of emptying the crystallization plate 16 and removing the protein solution 26 a and the crystallization solution from the protein solution supply reservoir 26.
- the crystallization solution 25a taken out of the supply reservoir 25 is dispensed by dispensing means described below.
- an X-axis table 31 is arranged in the X direction, and the Y-axis table 32 connected to the X-axis table 31 has The dispensing head 3 3 is attached.
- the dispensing head 33 moves on the work area 11 including the dispensing stage 11a.
- Fig. 5 shows an example of the dispensing head moving mechanism.
- the X-axis table 31 has a moving block 32 f guided by a guide mechanism composed of an X guide 31 e and a slider 31 d, a feed screw 31 a, and a nut 3.
- the Y-axis table 32 has a moving plate 33 a guided by a guide mechanism composed of a Y guide 32 e and a slider 32 d, and a linear motion mechanism composed of a feed screw 32 a and a nut 32 b. Thus, it is configured to drive in the Y direction via block 32c.
- a vertical dispensing head base member 34 is connected to the lower surface of the moving plate 33a.
- An elevating plate 35 is slidably provided in the Z direction on the dispensing head base member 34.
- the elevating plate 35 is a lifting module fixed to the dispensing head base member 34.
- the dispensing head base member 34 and the lifting / lowering motor 36 constitute a Z-axis table.
- the Z-axis table, X-axis table 31 and Y-axis table 32 are used to move the dispensing head 33.
- the head moving mechanism 30 (see FIG. 7) is configured.
- the dispensing head 35 is provided with three dispensing heads, a first dispensing head 37, a second dispensing head 38, and a third dispensing head 39. Of these dispensing heads, the first dispensing head 37 and the second dispensing head 38 are both crystallization solution dispensing heads for crystallization solution 25a.
- the first dispensing head 37 is used for dispensing a large volume of crystallization solution 25a in a short time
- the second dispensing head 38 is used for dispensing a small volume of crystallization solution 25a. Used for highly accurate dispensing.
- the third dispensing head 39 is a protein solution dispensing head for the protein solution 26a.
- the configuration of these dispensing heads will be described.
- the first dispensing head 37, the second dispensing head 38, and the third dispensing head 39 have different dispensing tips, but have the same basic functions such as liquid suction and discharge.
- the first dispensing head 37 will be described as a target, and the description of the common portions of the second dispensing head 38 and the third dispensing head 39 will be omitted.
- the first dispensing head 37 is provided on the lifting plate 35, and the first lifting member 37a is slidably disposed on the lifting plate 35 along the vertical guide 37d.
- the configuration is as follows.
- the first lifting member 37a is raised and lowered by a predetermined stroke by the first head selection cylinder 40.
- a cylinder portion 37f is disposed below the first elevating member 37a, and a plunger 37e is fitted into the cylinder portion 37f from above.
- the plunger 37 e moves up and down by a plunger elevating mechanism 37 b equipped with a motor 37 c, and the plunger 37 e moves up and down in the cylinder part 37 f, so that the cylinder part 37 f Functions as a pump mechanism.
- the lower part of the cylinder part 37 f is connected to the tip mounting part 37 h, and the first dispensing tip 43 is mounted on the tip mounting part 37 h.
- 1st minute Injection tip 43 is a large size crystallization solution dispensing tip and is supplied by tip rack 18.
- the tip mounting section 37 h is provided with a tip release plate 37 g.When the tip release plate 37 g moves downward with the first dispensing tip 43 attached, the first minute Note Tip 43 comes off tip mounting part 37. As described above, the attachment and detachment of the first dispensing tip 43 to and from the first dispensing head 37 can be performed automatically.
- the second dispensing head 38 and the third dispensing head 39 will be described.
- the second dispensing head 38 and the third dispensing head 39 include a second elevating member 38 a having a mechanism similar to the plunger elevating mechanism 37 b and the cylinder part 37 f described above,
- the third elevating member 39 a is moved up and down by the second head selection cylinder 41 and the third head selection cylinder 42, respectively.
- a second dispensing tip 44 and a dispensing nozzle 45 are mounted on the second dispensing head 38 and the third dispensing head 39, respectively.
- the second dispensing tip 44 is a small size crystallization solution dispensing tip, supplied by the tip rack 17.
- the dispensing nozzle 45 is a protein solution dispensing nozzle, and is supplied by a nozzle rack 27.
- the attachment and detachment of the second dispensing tip 44 and the dispensing nozzle 45 are the same as in the case of the first dispensing tape 43.
- the first dispensing head 37, the second dispensing head 38, and the third dispensing head 39 are composed of the first head selection cylinder 40, the second head selection cylinder 41, and the third head selection cylinder.
- the strokes S 1, S 2, and S 3 are moved up and down by the sliders 42, and the first dispensing head 37, the second dispensing head 38, and the third dispensing head.
- the pad 39 is moved up and down at the same time, and the Z-axis table (lifting unit 36) moves up and down the stroke S4 at the same time.
- one of the above three dispensing heads is selected according to the target and purpose of the dispensing operation, and a head corresponding to the selected dispensing head is selected.
- Drive the selection cylinder to lower only the selected dispensing head so that the lower end of the corresponding dispensing tip or dispensing nozzle is below the other dispensing tips or dispensing nozzles that were not selected. Project. For example, if the first dispensing head 37 is selected, the first dispensing tip 43 descends by the stroke S1, and similarly the second dispensing head 38, the third dispensing When the head 39 is selected, the second dispensing tip 44 and the dispensing nozzle 45 move down by the strokes S2 and S3, respectively. These strokes Sl, S2, and S3 are set individually according to the height of the target dispensing site.
- FIG. 6 shows an example of a dispensing operation in a crystallization plate producing operation performed using the dispensing head section 33. First, select the first dispensing head 37, take out the crystallization solution 25a from the crystallization solution reservoir 25 in the first dispensing tip 43, and then as shown in FIG.
- the crystallization solution 25a is stored in the reservoir 16c of the well 16a. Is dispensed. At this time, since the first dispensing tip 43 is a large-sized tip for the crystallization solution, dispensing can be completed in a short time even when the dispensing amount into the liquid reservoir 16 c is large. be able to.
- the third dispensing head 39 is selected, the protein solution 26a is taken out from the protein solution reservoir 26, and the crystallization solution 25 is stored in the reservoir 16c as shown in FIG. 6B. Dispense the protein solution 26a into the pocket at the top of the liquid holding unit 16b for the well 6a into which a has been dispensed.
- the second dispensing head 38 was selected, and as shown in FIG. 6C, a part of the crystallization solution 25 a in the reservoir 16 c was sucked by the second dispensing tip 44, A predetermined amount of the crystallization solution 25a is added to the protein solution 26, a already dispensed into the liquid holding section 16b.
- the second dispensing tip 44 is a small-sized tip for a crystallization solution, even if the amount of the crystallization solution to be added to the protein solution 26a is very small, accurate dispensing is performed. Is performed.
- the mixing ratio of the protein solution 26a and the crystallization solution 25a in the liquid holding section 16b can be arbitrarily set in various combinations by the second dispensing tip. As a result, the protein solution can be adjusted to various concentrations. Therefore, screening without changing the protein concentration conditions can be easily performed without preparing protein solutions of various concentrations in advance.
- the dispensing head section 3 3 and the above-described dispensing head moving mechanism are configured such that the reservoir 16 for the well 16 a of the crystallization plate 16 set on the dispensing stage 11 a.
- Dispensing means for dispensing the crystallization solution 25a to 6c and dispensing the protein solution 26a to the liquid holding part 16b is configured.
- the dispensing means includes a crystallization solution dispensing head (third dispensing head 39) for dispensing the crystallization solution 25 a into a single dispensing head section 33, and a protein solution 2. It has a protein solution dispensing head for dispensing 6a.
- a second dispensing head 38 for dispensing 25a is provided. In the dispensing operation described above (see FIG. 6), the second dispensing head 38 is moved from the liquid storage section 16c. Aspirate crystallization solution 25a and dispense into liquid holding section 16b.
- a description will be given of a seal sticking section 50 provided on the side of the dispensing stage 11a (the opposite side of the stock section 12) shown in FIG.
- the sealing means in the present invention is not limited to the sealing portion, and for example, sealing means by thermocompression bonding or the like can be used.
- a slide table 51 is disposed on the work area 11.
- a plate holder 52 for holding the crystallization plate 16 is mounted on the slide table 51 in a sliding manner in the Y direction.
- the plate holder 52 is moved by a moving means (not shown). Reciprocating in the direction.
- the crystallization plate 16, which has been dispensed at the dispensing stage 11 a, is placed and held on the plate holder 52.
- a head 55 with a sticker is provided so as to be able to move up and down.
- the sheet sticking member 56 drawn out from the seal supply section 53 is supplied to the seal sticking head 55.
- the seal member 56 is supplied in a state of being laminated on the release paper, and in the seal attaching operation, the seal attaching head 55 is pressed against the upper surface of the crystallization plate 16 held by the plate holding portion 52. Then, the crystallization plate 16 is moved in the horizontal direction (Y direction) relative to the head 55 with the seal attached.
- Seal sticking part 50 is a pipette in which the crystallization solution 25 a and the protein solution 26 a were dispensed 1
- An opening 3 c for carrying out the crystallization plate 16 is provided on a side surface of the housing 3 at a position adjacent to the seal attaching portion 50.
- the crystallization plate 16 with the seal member 56 attached to the upper surface at the seal attachment section 50 is carried out to the protein crystal detector 5 through the opening 3c by the transport head 21.
- a bar code reading section 57 is provided in the opening 3c, and the ID code attached to the transported a, plate 16 is read by the bar code reading section 57.
- the sealing member is not particularly limited.
- a transparent film that is difficult to expand and contract is preferable.
- a film such as polyolefin is used.
- the protein crystallization plate preparation device 2 has a communication function, and is connected to a host computer 67, which is a higher-level control unit, via a LAN system 66 connected to a communication interface 65. I have.
- the communication interface 65 is connected to the processing unit 60.
- the processing unit 60 executes various processing programs stored in the program storage unit 62 based on various data stored in the data storage unit 61, thereby implementing various operations and processing functions to be described later.
- a protein crystallization plate production operation program 62a is stored in the program storage unit 62, and by executing this program, a protein crystallization plate production operation described later is performed.
- the data storage unit 61 includes a consumable information storage unit 61a, a dispensing operation information storage unit 61b, a supply reservoir information storage unit 61c, and a crystallization plate information storage unit 61d.
- the consumables information storage unit 61 a contains information on consumables used in the protein crystallization plate production operation, that is, the crystallization plate 16, the tip racks 17, 18 and the seal in the stock unit 12.
- the stock information of the sealing member 56 in the supply section 53 is stored.
- the stock information includes the position where the stock is stored, the stock remaining amount at each timing during operation of the apparatus, and the like.
- the transport unit 20 takes out each consumable from the stock unit 12 based on the stock information.
- the stock remaining amount is updated in real time by subtracting the consumed amount for each dispensing operation from the initial value input in advance by teaching. By constantly monitoring the remaining amount of stock, it is possible to prevent or stop the equipment from being stopped due to running out of consumables.
- the dispensing operation information storage unit 61b stores dispensing operation information downloaded from the host computer 67, that is, a predetermined liquid stored in a predetermined well 6a of the crystallization plate 16 by the dispensing means. Stores information necessary to dispense only a fixed amount.
- the dispensing operation information includes the combination of the protein information 26a and the crystallization solution 25a with the cell information indicating the sequence position of the protein 16a on the crystallization plate 16 (what kind of protein solution 26 a) and whether the crystallization solution 25a is dispensed into the same well).
- the supply reservoir information storage unit 61c stores the supply reservoir information, that is, the positions of the protein solution supply reservoir 26 and the crystallization solution supply reservoir 25 in the work area 11 and the level of each of these reservoirs. Information indicating the type of the stored solution is stored.
- the crystallization plate information storage unit 61d is identified and specified by the crystallization plate information that associates the crystallization plate with the dispensing operation information, that is, the ID code, for each crystallization plate 16 after the dispensing operation.
- the crystallization plate information that associates the crystallization plate with the dispensing operation information, that is, the ID code, for each crystallization plate 16 after the dispensing operation.
- the dispensing operation information that is, the ID code
- the processing unit 60 includes a dispensing head moving mechanism 30, a dispensing head unit 33, a stock unit 12, a transport unit 20, and a seal sticking unit 50 in accordance with the protein crystallization plate production operation program 62 a.
- the barcode reading unit 57 transmits the ID code read from the crystallization plate 16 carried out from the opening 3c to the processing unit 60. This provides an ID code for creating the crystallization plate information described above.
- the display processing unit 63 performs a process of displaying a guidance image or the like at the time of overnight input on a display device. Operation
- the input processing unit 64 inputs operation commands and data to the processing unit 60 by input means such as a touch key provided on the control panel 4.
- This operation is performed by the processing section 60 executing the protein crystallization plate preparation operation program 62a, whereby the protein solution and the crystal are added to each well for screening the protein crystallization conditions by the vapor diffusion method.
- a crystallization plate to which the crystallization solution is dispensed is prepared.
- the empty crystallization plate 16 is transferred from the stock unit 12 to the transport unit 20. And transported to the dispensing stage 11a (ST1).
- the dispensing operation information is read from the dispensing operation information storage unit 61b (ST2).
- the dispensing head 33 is moved relative to the crystallization plate 16 based on the dispensing operation information, and the dispensing operation is performed on the first column 16a (ST3). As a result, the dispensing operation shown in FIG. 6 is performed.
- next level is determined (ST4). If the next level is present, the dispensing operation for the next level is performed (ST5). The same processing is repeatedly executed until it is determined. If it is determined in (ST 4) that there is no next well, the crystallized plate 16 after the dispensing operation is transported to the seal attaching section 50 (ST 6).
- the protein crystal observation device 5 is used for detecting a protein crystal formed in a protein solution by a vapor diffusion method on the crystallization plate 16 prepared by the protein crystallization plate preparation device 2.
- the protein crystal detector 5 has a configuration in which a storage unit 70, a transport unit 71 and an observation unit 73 are arranged in a constant temperature chamber formed in a box-shaped housing 6. Has become.
- the constant temperature chamber 6 has a temperature control function to maintain the internal atmosphere in a predetermined environment, and as shown in FIG. Is provided with a carry-in port 6b for carrying the crystallization plate 16 carried out from the opening 3c of the protein crystallization plate preparation device 2 into the inside.
- the entrance 6b can be opened and closed freely by an entrance opening / closing mechanism (not shown).
- the internal structure of the constant temperature chamber will be described. Inside the constant temperature room, a vertical shelf-shaped storage unit 70 is arranged along the inner wall surface.
- the storage section 70 has a plurality of storage sections 70a partitioned into shelves. Each of the storage sections 70a is subjected to a dispensing operation by the crystallization plate manufacturing apparatus 2, and the pipes 16 are provided.
- a closed crystallization plate 16 is accommodated only one.
- the protein crystal detector 5 serves as a crystallization container accommodating means for accommodating a plurality of crystallization plates 16 in which a well 16a is sealed under a predetermined environment.
- a transport unit 71 is disposed in front of the storage unit 70.
- the transport unit 71 includes an X table 7IX, a Y table 71Y, a ⁇ table 71 ⁇ , a rotary head 71R, and a plate holding head 72.
- the X table 7 IX is arranged in the X direction (the direction parallel to the storage unit 70) in a horizontal posture on the floor, and the Z table 7 1 Z set up on the X table 7 1 X
- the Y table 71 Y is mounted in a horizontal posture, and the Y table 71 is mounted with a rotary head 71 R.
- a plate holding head 72 is mounted on the rotating shaft of the rotating head 71 R.
- the plate holding head 72 moves in the X, ⁇ , ⁇ directions on the front surface of the storage unit 70. Further, by driving the rotary head 71 R, the horizontal direction of the holding head 8 can be changed.
- the plate holding head 72 holds the plate 16 carried in from the inlet 6b by the arm 72a, and holds Store in 70a.
- Storage section 5 The crystallization plate 16 held for a predetermined time in a is held by the plate holding head 72 of the transport unit 71, and the plate holding head 72 is moved. , And transported to the observation section 73.
- the observation section 73 has a configuration in which an observation table 75 is mounted in a horizontal posture on a frame 74 a erected on a base 74, and a camera 76 is arranged above the observation table 75. ing.
- the crystallization plate 16 transported by the plate holding head 72 is placed and set on the observation table 75.
- the XYZ moving mechanism provided in the observation table 75, the plate 16 moves in the X, ⁇ , and Z directions.
- the crystallization plate 16 in this state is stored under a predetermined temperature atmosphere to evaporate the solvent component in the protein solution 26a, thereby increasing the protein concentration of the protein solution 26a to a supersaturated state. Produces protein crystals. At this time, the evaporation of the solvent from the protein solution 26a progresses slowly while maintaining the equilibrium between the solvent evaporating from the protein solution 26a and the vapor absorbed by the crystallization solution 25a. Stable crystal formation is performed.
- the observation unit 73 observes the crystallization plate 16 in such a crystal formation process to detect the presence or absence of the protein crystal and the degree of crystallization in each well 16a.
- FIG. 11 shows an example of an observation operation for capturing an observation image of a protein solution.
- the crystallization plate 16 set on the observation table 75 is moved below the camera 76, and the liquid holding part 16b in the observation target cell 16a is moved to the camera 76. Align with the imaging optical axis.
- the protein crystal detector 5 has a communication interface 87, and the communication interface 87 is a processing unit 80 that performs control processing inside the protein crystal detector 5 via a LAN system 66.
- a control signal is sent and received between the host computer 67 and the host controller 67 which is an upper control unit.
- the processing unit 80 implements various operations and processing functions described later by executing various processing programs stored in the program storage unit 82 based on various data stored in the data storage unit 81.
- a crystal detection program 82a and an observation operation program 82b are stored in the program storage unit 82, and by executing these programs, the observation operation of the protein solution and the protein A process is performed to detect protein crystals in the solution.
- the data storage unit 81 includes a processed image storage unit 81a, an observation image storage unit 81b, and a crystallization information storage unit 81c.
- the processed image storage unit 81a includes a protein crystal detection process.
- c observation image storage unit 8 lb which stores the processed image after various processing is performed, and stores the protein solution 2 6 a of the observation images interleaved taken by the camera 7 6 in.
- the observation image stored in the observation image storage unit 81b is a processing target.
- the crystallization information storage unit 81c specifies the crystallization information, that is, the image data of the observation image in which crystallization was detected in the protein crystal detection processing, and the crystallization plate from which the observation image was obtained. Information and information such as the observation time when the crystallization plate was observed Please note.
- the processing unit 80 includes a display processing unit 23, an operation input processing unit 24, a camera 76, an observation stage 75, a loading / unloading mechanism 85, a transport unit 71, and a temperature control unit 86. Is connected.
- the temperature control unit 86 adjusts the temperature in the constant temperature room according to a temperature command sent from the host computer 67 via the processing unit 80. This keeps the temperature inside the constant temperature room at the set temperature.
- the transport unit 71 transports the crystallization plate 16 in the constant temperature chamber 6 according to a control signal from the processing unit 80, that is, the plate 16 loaded through the loading port 6b provided in the constant temperature chamber 6.
- a transfer operation such as an operation of storing the crystallization plate 16 in a predetermined storage unit 70 a of the storage unit 70 or an operation of taking out the crystallization plate 16 from the storage unit 70 a and setting it in the observation unit 73 is performed.
- the entrance opening / closing mechanism 85 opens and closes the entrance 6b in accordance with a control signal from the processing section 80.
- the processing unit 80 controls the observation table 75 and the camera 76 to move the crystallization plate 16 held on the observation table 75, and to take an image of the protein solution using the camera 76. Is performed.
- the display processing section 83 displays an observation image captured by the camera 76 and various processed images, and also performs processing for displaying a guidance image at the time of data input. Operation ⁇
- the input processing unit 84 inputs an operation command or data to the processing unit 80 by operating an input device such as a keypad. Next, an example of an observation operation for detecting a protein crystal will be described with reference to FIG. This observation operation is performed by the processing unit 80 executing the observation operation program 82b. At the start of the observation operation, the crystallization plate 16 loaded from the upstream device via the entrance 6b is used. Is the storage Housed and stored in part 70a.
- the specified crystallization plate 16 is taken out by the transfer unit 71 and moved to the observation stage 75 (ST 11). Then, the head 16a is positioned at the observation position immediately below the camera 76 (ST12). Thereafter, the lighting device 77 is turned on, and an image is captured by the camera 76 (ST13). Thereafter, a protein crystal detection process described later is executed (ST 14).
- the presence or absence of the next well is determined (ST15). If the next well is present, the next well is positioned at the observation position (ST 16), and the process returns to (ST 13) to repeat the same processing. If it is determined in (ST15) that there is no next well, the crystallization plate 16 on which the processing has been completed is returned to the storage section 70a (ST17). Then, the host computer 67 is notified of the end of the observation operation (ST 18), and the observation operation execution processing ends.
- the above-mentioned observation operation it is possible to perform all operations without taking the crystallization plate 16 out of the constant temperature chamber to the outside.
- the screening accuracy can be improved, and the observation field becomes cloudy due to condensation when the crystallization plate is exposed to room temperature from a cooled state. It is possible to obtain good observation results without generation of cracks, and it is possible to perform observation work for detecting protein crystals efficiently and with high reliability.
- the determination of crystallization may be performed, for example, by a combination of conventional image processing techniques, or may be specially developed for crystallization determination.
- the transport section 20 of the crystallization plate preparation apparatus 2 includes the dispensing stage 11a and
- the transfer unit 71 of the protein crystal detector 5 is a second transfer unit intended for the crystallization solution storage unit.
- the first transport means and the second transport means constitute a crystallization vessel transport means.
- the protein crystal detector 5 is composed of a constant-temperature room for accommodating a plurality of crystallization plates 16 in which the wells 16a are sealed in a predetermined environment, and is disposed in the constant-temperature room and generated in the crystallization plates 16.
- An observation unit 73 for detecting the protein crystals obtained is provided.
- the above-mentioned second transfer means is configured to transfer the crystallization plate 16 in the constant temperature chamber.
- observation unit 73 as a protein crystal detection means was disposed in a constant temperature room accommodating the crystallization plate 16, but the observation unit may be provided outside the constant temperature room. Good.
- the method of observing the protein solution in the crystallization plate 16 by the camera 10 has been described as a means for detecting protein crystals, protein crystals may be detected using other methods. Industrial potential
- screening apparatus of this invention screening of the protein crystallization conditions by the vapor diffusion method using the sitting drop method can be efficiently performed. Further, the screening apparatus of the present invention can be used not only for screening protein crystallization conditions, but also for producing protein crystals, for example.
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- Crystallography & Structural Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Urology & Nephrology (AREA)
- Biomedical Technology (AREA)
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- Immunology (AREA)
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- General Physics & Mathematics (AREA)
- Medicinal Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- Food Science & Technology (AREA)
- Pathology (AREA)
- Biotechnology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Microbiology (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Peptides Or Proteins (AREA)
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04730020A EP1637630A4 (en) | 2003-04-28 | 2004-04-28 | APPARATUS FOR SCREENING CONDITIONS OF CRYSTALLIZING PROTEINS |
US10/555,033 US20070020748A1 (en) | 2003-04-28 | 2004-04-28 | Apparatus for screening proptein crystallization conditions |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-124085 | 2003-04-28 | ||
JP2003124085A JP3753134B2 (ja) | 2003-04-28 | 2003-04-28 | 蛋白質結晶化条件スクリーニング装置 |
Publications (1)
Publication Number | Publication Date |
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WO2004097082A1 true WO2004097082A1 (ja) | 2004-11-11 |
Family
ID=32768013
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2004/006147 WO2004097082A1 (ja) | 2003-04-28 | 2004-04-28 | 蛋白質結晶化条件スクリーニング装置 |
Country Status (4)
Country | Link |
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US (1) | US20070020748A1 (ja) |
EP (1) | EP1637630A4 (ja) |
JP (1) | JP3753134B2 (ja) |
WO (1) | WO2004097082A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110060126A1 (en) * | 2004-07-16 | 2011-03-10 | Jean-Pascal Viola | Method and apparatus for optimizing crystallization conditions of a substrate |
JP4865680B2 (ja) * | 2007-11-06 | 2012-02-01 | 古河機械金属株式会社 | 蛋白質結晶化装置 |
JP5234654B2 (ja) * | 2009-07-02 | 2013-07-10 | 独立行政法人日本原子力研究開発機構 | 生体分子の大型結晶育成のための方法および装置 |
EP2692911B1 (en) | 2011-03-31 | 2017-02-22 | Kunimine Industries Co., Ltd. | Use of agent for searching for protein crystallization conditions, and method for searching for protein crystallization conditions |
EP2703820B1 (en) * | 2012-08-31 | 2019-08-28 | F. Hoffmann-La Roche AG | Mobile tip waste rack |
US11041871B2 (en) * | 2014-04-16 | 2021-06-22 | Bd Kiestra B.V. | System and method for incubation and reading of biological cultures |
JP2016131520A (ja) * | 2015-01-19 | 2016-07-25 | ヤマハ発動機株式会社 | ウェルプレートの移動装置 |
CN108159730B (zh) * | 2017-12-27 | 2020-05-19 | 大连理工大学 | 一种具有精确连续微米级结构的大分子晶体的高通量制备平台及方法 |
US11452948B2 (en) * | 2017-12-27 | 2022-09-27 | Dalian University Of Technology | Experiment system and method for accurate controlling of macromolecular crystallization process |
CN109453537A (zh) * | 2018-11-22 | 2019-03-12 | 衡阳市晋宏精细化工有限公司 | 可自动分离结晶与溶液的结晶机 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07500806A (ja) * | 1991-10-09 | 1995-01-26 | シェリング・コーポレーション | 結晶形成装置及び自動化された結晶化装置 |
JP2003014596A (ja) * | 2001-06-14 | 2003-01-15 | Ishikawajima Inspection & Instrumentation Co | タンパク質結晶化ハンギングドロップの作成装置 |
JP2003502652A (ja) * | 1999-06-18 | 2003-01-21 | ザ リージェンツ オブ ザ ユニバーシティ オブ カリフォルニア | アレイ微小結晶化を行う方法及び装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5096676A (en) * | 1989-01-27 | 1992-03-17 | Mcpherson Alexander | Crystal growing apparatus |
US7247490B2 (en) * | 1999-04-06 | 2007-07-24 | Uab Research Foundation | Method for screening crystallization conditions in solution crystal growth |
-
2003
- 2003-04-28 JP JP2003124085A patent/JP3753134B2/ja not_active Expired - Fee Related
-
2004
- 2004-04-28 EP EP04730020A patent/EP1637630A4/en not_active Withdrawn
- 2004-04-28 WO PCT/JP2004/006147 patent/WO2004097082A1/ja active Application Filing
- 2004-04-28 US US10/555,033 patent/US20070020748A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07500806A (ja) * | 1991-10-09 | 1995-01-26 | シェリング・コーポレーション | 結晶形成装置及び自動化された結晶化装置 |
JP2003502652A (ja) * | 1999-06-18 | 2003-01-21 | ザ リージェンツ オブ ザ ユニバーシティ オブ カリフォルニア | アレイ微小結晶化を行う方法及び装置 |
JP2003014596A (ja) * | 2001-06-14 | 2003-01-15 | Ishikawajima Inspection & Instrumentation Co | タンパク質結晶化ハンギングドロップの作成装置 |
Non-Patent Citations (1)
Title |
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See also references of EP1637630A4 * |
Also Published As
Publication number | Publication date |
---|---|
JP2004194647A (ja) | 2004-07-15 |
US20070020748A1 (en) | 2007-01-25 |
EP1637630A1 (en) | 2006-03-22 |
EP1637630A4 (en) | 2009-04-29 |
JP3753134B2 (ja) | 2006-03-08 |
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