FI106043B - Method for selecting L-lysine producing microorganisms - Google Patents
Method for selecting L-lysine producing microorganisms Download PDFInfo
- Publication number
- FI106043B FI106043B FI925887A FI925887A FI106043B FI 106043 B FI106043 B FI 106043B FI 925887 A FI925887 A FI 925887A FI 925887 A FI925887 A FI 925887A FI 106043 B FI106043 B FI 106043B
- Authority
- FI
- Finland
- Prior art keywords
- microorganisms
- caprolactam
- selecting
- resistant
- brevibacterium
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P13/00—Preparation of nitrogen-containing organic compounds
- C12P13/04—Alpha- or beta- amino acids
- C12P13/08—Lysine; Diaminopimelic acid; Threonine; Valine
Landscapes
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Zoology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microbiology (AREA)
- General Chemical & Material Sciences (AREA)
- Biotechnology (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Description
106043106043
Menetelmä L-lys±±n±ä tuottavien mikro-organismien selek-toimiseksi Tämä keksintö koskee menetelmää mikro-organismien 5 selektoimiseksi, joilla on voimistunut L-lysiinin tuotantokyky .The present invention relates to a method for the selection of microorganisms having enhanced L-lysine production capacity.
L-lysiini on välttämätön aminohappo, ja sitä käytetään laajasti elintarvikkeisiin ja eläinten rehuihin lisättävänä aineena. Sitä käytetään myös lääketieteessä in-10 fuusioiiuosten aineosana.L-lysine is an essential amino acid and is widely used as a substance in food and animal feeds. It is also used in medicine as an ingredient in in-10 fusion solutions.
L-lysiiniä saadaan hydrolysoimalla proteiineja hapolla, syntetisoimalla D,L-lysiiniä ja jakamalla sitten rasemaatti optisiksi isomeereiksi samoin kuin syntetisoimalla mikro-organismien avulla. Mikrobiologisia menetelmiä 15 L-lysiinin valmistamiseksi kuvataan esimerkiksi julkaisus sa Trends in Biotechnology 1 (1983) 70 - 74.L-lysine is obtained by hydrolyzing proteins with acid, synthesizing D, L-lysine and then dividing the racemate into optical isomers as well as by microorganisms synthesis. Microbiological methods for preparing L-lysine are described, for example, in Trends in Biotechnology 1, 70-74 (1983).
Nyt on löydetty parannettu menetelmä L-lysiiniä tuottavien mikro-organismien selektoimiseksi.An improved method for selecting L-lysine-producing microorganisms has now been found.
Keksintö koskee menetelmää mikro-organismien se-20 lektoimiseksi, joilla on voimistunut L-lysiinin tuotanto kyky. Menetelmälle on tunnusomaista, että sen jälkeen kun on aiheutettu mutaatioita sukuihin Corynebacterium ja Bre- : 1·· vibacterium kuuluviin mikro-organismeihin tunnetuilla mu- • · tageeneilla sinänsä tunnetulla tavalla, selektoidaan jou-:V: 25 kosta sellaiset mikro-organsimikannat, jotka ovat resis- • tenttejä 2-atsido-e-kaprolaktaamin aiheuttamalle takaisin- ··» · : kytkennän estolle.The invention relates to a method for the selection of microorganisms which have enhanced L-lysine production capacity. The method is characterized in that after mutations in microorganisms belonging to the microorganisms belonging to the genus Corynebacterium and Bre-: 1 ·· vibacterium are known, microorganisms strains which are: resistance to 2 · azido-ε-caprolactam-induced · ·· »·: inhibition of coupling.
* · 2-atsido-e-kaprolaktaamilla on yllättävästi olen- • · · naisesti suurempi teho mutanttien valikoinnissa mutagenee- ... 30 . sin jälkeen kuin JP-patenttijulkaisussa 51-19 186 ja EP- • · *“·’ julkaisussa 175 309 kuvatuilla yhdisteillä, kuten esimer- • · ···1 kiksi fluori- ja kloorikaprolaktaamilla.* · 2-azido-ε-caprolactam surprisingly has significantly higher potency in selecting mutants for mutagenesis ... 30. followed by the compounds described in JP-A-51-19186 and EP-A-175,309, such as, for example, fluorine and chlorocaprolactam.
Niinpä atsidokaprolaktaamilla tehdyn valikoinnin kautta voidaan kantojen lysiinin tuotantokykyä suurentaa 35 yli 10 %.Thus, through selection with azidocaprolactam, the lysine production capacity of the strains can be increased by more than 10%.
« · · • · · • Λ · 1 « • · • · • · · 106043 2«· • Λ 1 1 1 1 1 • 60 106043 2
Keksinnön mukaisesti mutantteja voidaan valmistaa tavanomaisella mutageneesilla, esimerkiksi N-metyyli-N'-nitro-N-nitrosoguanidiinilla tai UV-säteilytyksellä.According to the invention, mutants can be prepared by conventional mutagenesis, for example by N-methyl-N'-nitro-N-nitrosoguanidine or by UV irradiation.
Sukujen Corynebacterium (C) ja Brevibacterium (B) 5 mikro-organismeiksi soveltuvat esimerkiksi seuraavat: B. amoniagenis, B. divaricatum, B. flavum, B. ketoglutami-cum, B. lactofezmentum, B. linens, B. sp., C. asetoacido-philum, C. acetoglutamicum, C. glutamicum, C. lilium ja C. sp. Edullisia ovat B. flavum ja C. glutamicum, erityisesti 10 B. flavum ATCC 21474 ja C. glutamicum ATCC 21526. Viimeksi · mainitun erityisetuna on, että se on riippuvainen homose-riinistä ja lisäksi resistentti S-(2-aminoetyyli)-L-kyste-iinille.Examples of microorganisms of the genera Corynebacterium (C) and Brevibacterium (B) 5 include: B. amoniagenis, B. divaricatum, B. flavum, B. ketoglutamycum, B. lactofezmentum, B. Linens, B. sp., C. acetoacid-philum, C. acetoglutamicum, C. glutamicum, C. lilium and C. sp. Preferred are B. flavum and C. glutamicum, in particular B. flavum ATCC 21474 and C. glutamicum ATCC 21526. The latter has the particular advantage of being dependent on homoserine and additionally resistant to S- (2-aminoethyl) -L-. kyste-iinille.
Kuten jo mainittiin, on edullista, että kannat ovat 15 homoseriinistä riippuvaisia. Lisäksi on hyvä, että kannat ovat myös resistenttejä S-(2-aminoetyyli)-L-kysteiinille. Ellei kannoilla ole tätä resistenssiä, voidaan se saada aikaan US-patenttijulkaisun 3 707 441 mukaisesti käsittelemällä kannat N-metyyli-N'-nitro-N-nitrosoguanidiinilla 20 ja tekemällä sen jälkeen valikointi.As already mentioned, it is preferred that the strains are homoserine dependent. Furthermore, it is good that the strains are also resistant to S- (2-aminoethyl) -L-cysteine. If the strains do not have this resistance, they can be obtained according to U.S. Patent 3,707,441 by treating the strains with N-methyl-N'-nitro-N-nitrosoguanidine 20 and subsequent selection.
EsimerkkiExample
Corynebacterium glutamicum ATCC 21526 käsiteltiin iCorynebacterium glutamicum ATCC 21526 was treated i
; ‘·· 3 0 min lämpötilassa 3 0 °C Tris-maleiinihappopuskurissa (pH; '··· for 30 minutes at 30 ° C in Tris-maleic acid buffer (pH 3)
t « ·/·,' 6,0) N-metyyli-N'-nitro-N-nitrosoguanidiinilla :Y: 25 (250 μg/ml) . Sen jälkeen solut pestiin Tris-puskurilla • ·': (0,1 mol/1, pH 7,2), siirrostettiin minimiagarmaljoille ja ··· · j·.^ inkuboitiin sen jälkeen 4-14 vuorokautta lämpötilassa .··/. 28 °C.t (· 6 ·, · 6,0) with N-methyl-N′-nitro-N-nitrosoguanidine: Y: 25 (250 µg / ml). The cells were then washed with Tris buffer (0.1 mol / L, pH 7.2), seeded on minimum agar plates and incubated for 4-14 days at a temperature. 28 ° C.
• ♦ ·• ♦ ·
Minimiagarin koostumus oli seuraava: ... 3 0 . 20 g/1 agaria 0,1 g/1 MnS04-H20:a • · *·;;* 2 g/1 (NH4) 2S04:a 100 Mg/l biotiinia • · ···’ 0,5 g/1 KH2P04:a 30 mg/1 Met:a, Thr:a ja Leu:a 0,5 g/1 K2HP04:a kutakin .***: 0,4 g/1 MgS04 *7H20:a 4 g/1 laktaattia 35 0,01 g/ι FeS04-7H20:a pH 7,0 • · · • · · « · · • · · * « · • · · 106043 3The composition of the minimum agar was: ... 3 0. 20 g / L agar 0.1 g / L MnSO 4 -H 2 O • · * · ;; * 2 g / L (NH 4) 2 SO 4 100 Mg / L Biotin • · · · · · 0.5 g / L KH 2 PO 4 30 mg / L Met, Thr and Leu 0.5 g / L K 2 HPO 4 ***: 0.4 g / L MgSO 4 * 7H 2 O 4 g / L Lactate 35 0.01 g / ι FeS04-7H20: pH 7.0 · · · · · · · 106043 3
Pesäkkeistä, jotka kasvoivat inkuboinnin jälkeen agarmaljoilla, määritettiin lysiiniä tuottavat. Kannat, jotka muodostivat lysiiniä 10 % enemmän kuin lähtökanta, eristettiin.Colonies that grew after incubation on agar plates were determined to produce lysine. Strains that produced 10% more lysine than the parent strain were isolated.
« · · • · • · · • · • · • · « · · , . . « · · • · • · • « · • · · ··· · • « • · · • · ♦ • * ··· • · « • · · • · · • · • · • · * ♦ ♦♦ , · · ··· m • · · • · · • · · • · · » · « · • · · « « · • · · » * · • · « • · • · • · ·«· · • • • • • •,,. . ·,, · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ···
Claims (1)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4023576 | 1990-07-25 | ||
DE4023576A DE4023576A1 (en) | 1990-07-25 | 1990-07-25 | METHOD FOR PRODUCING L-LYSINE PRODUCING MICROORGANISMS |
PCT/EP1991/001316 WO1992001785A1 (en) | 1990-07-25 | 1991-07-13 | Method of preparation of l-lysine-producing microorganismes |
EP9101316 | 1991-07-13 |
Publications (3)
Publication Number | Publication Date |
---|---|
FI925887A FI925887A (en) | 1992-12-28 |
FI925887A0 FI925887A0 (en) | 1992-12-28 |
FI106043B true FI106043B (en) | 2000-11-15 |
Family
ID=6410961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI925887A FI106043B (en) | 1990-07-25 | 1992-12-28 | Method for selecting L-lysine producing microorganisms |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0540556B1 (en) |
JP (1) | JPH05508543A (en) |
CA (1) | CA2075044C (en) |
DE (2) | DE4023576A1 (en) |
FI (1) | FI106043B (en) |
HU (1) | HU211056B (en) |
WO (1) | WO1992001785A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4204361A1 (en) * | 1992-02-14 | 1993-08-19 | Degussa | METHOD FOR PRODUCING L-LYSINE BY FERMENTATION OF CORYNEFORM BACTERIA |
KR100688575B1 (en) * | 2004-10-08 | 2007-03-02 | 삼성전자주식회사 | Non volatile semiconductor memory device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0175309A3 (en) * | 1984-09-14 | 1987-11-11 | Toray Industries, Inc. | A method for producing l-lysine |
-
1990
- 1990-07-25 DE DE4023576A patent/DE4023576A1/en not_active Withdrawn
-
1991
- 1991-07-13 JP JP91511992A patent/JPH05508543A/en active Pending
- 1991-07-13 DE DE59103718T patent/DE59103718D1/en not_active Expired - Lifetime
- 1991-07-13 CA CA002075044A patent/CA2075044C/en not_active Expired - Fee Related
- 1991-07-13 HU HU9202242A patent/HU211056B/en not_active IP Right Cessation
- 1991-07-13 WO PCT/EP1991/001316 patent/WO1992001785A1/en active IP Right Grant
- 1991-07-13 EP EP91912793A patent/EP0540556B1/en not_active Expired - Lifetime
-
1992
- 1992-12-28 FI FI925887A patent/FI106043B/en active
Also Published As
Publication number | Publication date |
---|---|
WO1992001785A1 (en) | 1992-02-06 |
HU211056B (en) | 1995-10-30 |
JPH05508543A (en) | 1993-12-02 |
DE4023576A1 (en) | 1992-01-30 |
HUT68739A (en) | 1995-05-17 |
EP0540556A1 (en) | 1993-05-12 |
CA2075044A1 (en) | 1992-01-26 |
DE59103718D1 (en) | 1995-01-12 |
FI925887A (en) | 1992-12-28 |
FI925887A0 (en) | 1992-12-28 |
HU9202242D0 (en) | 1992-10-28 |
CA2075044C (en) | 2001-07-10 |
EP0540556B1 (en) | 1994-11-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4656135A (en) | Process for producing L-isoleucine by fermentation | |
HU202285B (en) | Process for producing l-threonine by fermentation | |
GB2075056A (en) | L-proline-producing Microorganisms | |
EP0858510A1 (en) | Process for preparing o-acetylserine, l-cysteine and l-cysteine-related products | |
GB2049670A (en) | Producing l-threonine by fermentation c2c c6f | |
US7008786B2 (en) | Microorganism producing L-lysine and processes for producing L-lysine using the same | |
US5521074A (en) | Process for producing L-valine | |
JPS6115695A (en) | Preparation of l-isoleucine by fermentation method | |
FI106043B (en) | Method for selecting L-lysine producing microorganisms | |
DE60210184T2 (en) | L-cysteine producing bacterium and method for producing L-cysteine | |
JPS6115696A (en) | Preparation of l-isoleucine by fermentation method | |
GB2072185A (en) | Fermentative production of l-threonine | |
JP2578492B2 (en) | Method for producing L-threonine by fermentation method | |
JP2578463B2 (en) | Production method of L-lysine by fermentation method | |
AU783498B2 (en) | Microorganisms producing L-glutamine and processes for producing L-glutamine using the same | |
Hadj Sassi et al. | Effect of medium composition on L-Lysine production by a variant strain of Corynebacterium clutamicum ATCC 21513 | |
JPH0665314B2 (en) | Fermentation method for producing L-valine | |
JPS63248392A (en) | Production of l-leucine by fermentation | |
GB2084998A (en) | Fermentative preparation of l-isoleucine | |
US4421853A (en) | Fermentative preparation of L-leucine | |
HUT61598A (en) | Process for producing l-threonine | |
US5770412A (en) | Azido-caprolactam as inhibitor for selecting microorganisms with high lysine productivity | |
JP2574786B2 (en) | Method for producing L-threonine | |
HU215248B (en) | Process for producing l-lysine | |
JPH0160236B2 (en) |