DK264890A - METHOD OF BIOCHEMICAL OXIDATION OF STEROIDS AND GENETICALLY CONSTRUCTED CELLS FOR THIS USE - Google Patents

METHOD OF BIOCHEMICAL OXIDATION OF STEROIDS AND GENETICALLY CONSTRUCTED CELLS FOR THIS USE Download PDF

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Publication number
DK264890A
DK264890A DK264890A DK264890A DK264890A DK 264890 A DK264890 A DK 264890A DK 264890 A DK264890 A DK 264890A DK 264890 A DK264890 A DK 264890A DK 264890 A DK264890 A DK 264890A
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DK
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Prior art keywords
steroids
cholesterol
host cells
progesterone
hydrocortisone
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DK264890A
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Danish (da)
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DK175573B1 (en
DK264890D0 (en
Inventor
Harmen Slijkhuis
Gerardus Cornelis Maria Selten
Eric Bastiaan Smaal
Original Assignee
Gist Brocades Nv
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Publication of DK264890D0 publication Critical patent/DK264890D0/en
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Publication of DK175573B1 publication Critical patent/DK175573B1/en

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07J—STEROIDS
    • C07J5/00—Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond
    • C07J5/0007—Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond not substituted in position 17 alfa
    • C07J5/0023—Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond not substituted in position 17 alfa substituted in position 16
    • C07J5/003—Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond not substituted in position 17 alfa substituted in position 16 by a saturated or unsaturated hydrocarbon group including 16-alkylidene substitutes
    • C07J5/0038—Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond not substituted in position 17 alfa substituted in position 16 by a saturated or unsaturated hydrocarbon group including 16-alkylidene substitutes by an alkyl group
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Y—ENZYMES
    • C12Y106/00—Oxidoreductases acting on NADH or NADPH (1.6)
    • C12Y106/02—Oxidoreductases acting on NADH or NADPH (1.6) with a heme protein as acceptor (1.6.2)
    • C12Y106/02004—NADPH-hemoprotein reductase (1.6.2.4), i.e. NADP-cytochrome P450-reductase
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P5/00—Drugs for disorders of the endocrine system
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07J—STEROIDS
    • C07J13/00—Normal steroids containing carbon, hydrogen, halogen or oxygen having a carbon-to-carbon double bond from or to position 17
    • C07J13/005—Normal steroids containing carbon, hydrogen, halogen or oxygen having a carbon-to-carbon double bond from or to position 17 with double bond in position 16 (17)
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07J—STEROIDS
    • C07J13/00—Normal steroids containing carbon, hydrogen, halogen or oxygen having a carbon-to-carbon double bond from or to position 17
    • C07J13/007—Normal steroids containing carbon, hydrogen, halogen or oxygen having a carbon-to-carbon double bond from or to position 17 with double bond in position 17 (20)
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07J—STEROIDS
    • C07J21/00—Normal steroids containing carbon, hydrogen, halogen or oxygen having an oxygen-containing hetero ring spiro-condensed with the cyclopenta(a)hydrophenanthrene skeleton
    • C07J21/005—Ketals
    • C07J21/006—Ketals at position 3
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07J—STEROIDS
    • C07J41/00—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring
    • C07J41/0033—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring not covered by C07J41/0005
    • C07J41/005—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring not covered by C07J41/0005 the 17-beta position being substituted by an uninterrupted chain of only two carbon atoms, e.g. pregnane derivatives
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07J—STEROIDS
    • C07J5/00—Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond
    • C07J5/0007—Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond not substituted in position 17 alfa
    • C07J5/0015—Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond not substituted in position 17 alfa not substituted in position 16
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07J—STEROIDS
    • C07J7/00—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms
    • C07J7/0005—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21
    • C07J7/001—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by a keto group
    • C07J7/0015—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by a keto group not substituted in position 17 alfa
    • C07J7/002—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by a keto group not substituted in position 17 alfa not substituted in position 16
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07J—STEROIDS
    • C07J7/00—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms
    • C07J7/0005—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21
    • C07J7/001—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by a keto group
    • C07J7/004—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by a keto group substituted in position 17 alfa
    • C07J7/0045—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by a keto group substituted in position 17 alfa not substituted in position 16
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07J—STEROIDS
    • C07J7/00—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms
    • C07J7/008—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms substituted in position 21
    • C07J7/009—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms substituted in position 21 by only one oxygen atom doubly bound
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
    • C12N9/0004—Oxidoreductases (1.)
    • C12N9/0006—Oxidoreductases (1.) acting on CH-OH groups as donors (1.1)
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
    • C12N9/0004—Oxidoreductases (1.)
    • C12N9/0012—Oxidoreductases (1.) acting on nitrogen containing compounds as donors (1.4, 1.5, 1.6, 1.7)
    • C12N9/0036—Oxidoreductases (1.) acting on nitrogen containing compounds as donors (1.4, 1.5, 1.6, 1.7) acting on NADH or NADPH (1.6)
    • C12N9/0038—Oxidoreductases (1.) acting on nitrogen containing compounds as donors (1.4, 1.5, 1.6, 1.7) acting on NADH or NADPH (1.6) with a heme protein as acceptor (1.6.2)
    • C12N9/0042—NADPH-cytochrome P450 reductase (1.6.2.4)
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
    • C12N9/0004—Oxidoreductases (1.)
    • C12N9/0071—Oxidoreductases (1.) acting on paired donors with incorporation of molecular oxygen (1.14)
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
    • C12N9/0004—Oxidoreductases (1.)
    • C12N9/0095—Oxidoreductases (1.) acting on iron-sulfur proteins as donor (1.18)
    • 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
    • C12P33/00—Preparation of steroids
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Y—ENZYMES
    • C12Y101/00—Oxidoreductases acting on the CH-OH group of donors (1.1)
    • C12Y101/01—Oxidoreductases acting on the CH-OH group of donors (1.1) with NAD+ or NADP+ as acceptor (1.1.1)
    • C12Y101/01053—3-Alpha (or 20-beta)-hydroxysteroid dehydrogenase (1.1.1.53)
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Y—ENZYMES
    • C12Y114/00—Oxidoreductases acting on paired donors, with incorporation or reduction of molecular oxygen (1.14)
    • C12Y114/15—Oxidoreductases acting on paired donors, with incorporation or reduction of molecular oxygen (1.14) with reduced iron-sulfur protein as one donor, and incorporation of one atom of oxygen (1.14.15)
    • C12Y114/15004—Steroid 11-beta-monooxygenase (1.14.15.4)
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Y—ENZYMES
    • C12Y114/00—Oxidoreductases acting on paired donors, with incorporation or reduction of molecular oxygen (1.14)
    • C12Y114/15—Oxidoreductases acting on paired donors, with incorporation or reduction of molecular oxygen (1.14) with reduced iron-sulfur protein as one donor, and incorporation of one atom of oxygen (1.14.15)
    • C12Y114/15006—Cholesterol monooxygenase (side-chain-cleaving) (1.14.15.6), i.e. cytochrome P450scc
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Y—ENZYMES
    • C12Y114/00—Oxidoreductases acting on paired donors, with incorporation or reduction of molecular oxygen (1.14)
    • C12Y114/99—Miscellaneous (1.14.99)
    • C12Y114/99009—Steroid 17-alpha-monooxygenase (1.14.99.9), i.e. cytochrome-P450-steroid-17-alpha-hydroxylase
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Y—ENZYMES
    • C12Y118/00—Oxidoreductases acting on iron-sulfur proteins as donors (1.18)
    • C12Y118/01—Oxidoreductases acting on iron-sulfur proteins as donors (1.18) with NAD+ or NADP+ as acceptor (1.18.1)
    • C12Y118/01002—Ferredoxin-NADP+ reductase (1.18.1.2)

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Zoology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Wood Science & Technology (AREA)
  • Genetics & Genomics (AREA)
  • General Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Molecular Biology (AREA)
  • Biotechnology (AREA)
  • Microbiology (AREA)
  • Biomedical Technology (AREA)
  • Medicinal Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Diabetes (AREA)
  • Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Endocrinology (AREA)
  • Veterinary Medicine (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Biophysics (AREA)
  • Plant Pathology (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Steroid Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Enzymes And Modification Thereof (AREA)

Abstract

Genetically engineered host cells containing new expression cassettes are provided which are able to carry out biochemical oxidations of steroids. In particular the oxidation is carried out with cells into which DNA has been introduced which encodes protein involved in the biological pathway of cholesterol to hydrocortisone. Suited host cells comprise species of $i(Bacillus), $i(Saccharomyces) or $i(Kluyveromyces). The new host cells are suited for microbiological oxidations of cholesterol, pregnenolone, progesterone, 17$g(a)-hydroxy-progesterone, and cortexolone, which are intermediates in said biological pathway. The new expression cassettes are also useful in the ultimate production of a multigenic system for a one-step conversion of cholesterol into hydrocortisone.
DK199002648A 1988-05-06 1990-11-05 Use of an expression cassette leading to biochemical oxidation of steroids, such expression cassettes, DK175573B1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
EP88200904 1988-05-06
EP88200904 1988-05-06
EP88202080 1988-09-23
EP88202080 1988-09-23
PCT/NL1989/000032 WO1989010963A1 (en) 1988-05-06 1989-05-08 Process for the biochemical oxidation of steroids and genetically engineered cells to be used therefor
NL8900032 1989-05-08

Publications (3)

Publication Number Publication Date
DK264890D0 DK264890D0 (en) 1990-11-05
DK264890A true DK264890A (en) 1990-11-05
DK175573B1 DK175573B1 (en) 2004-12-13

Family

ID=26115083

Family Applications (1)

Application Number Title Priority Date Filing Date
DK199002648A DK175573B1 (en) 1988-05-06 1990-11-05 Use of an expression cassette leading to biochemical oxidation of steroids, such expression cassettes,

Country Status (16)

Country Link
JP (2) JP2963711B2 (en)
KR (1) KR100256025B1 (en)
CN (1) CN1038667A (en)
AT (1) ATE201235T1 (en)
AU (1) AU635494B2 (en)
CA (1) CA1340616C (en)
DE (1) DE68929296T2 (en)
DK (1) DK175573B1 (en)
ES (1) ES2157883T3 (en)
FI (1) FI109605B (en)
HU (1) HU217411B (en)
IL (1) IL90207A (en)
NO (1) NO314267B1 (en)
NZ (1) NZ229032A (en)
PT (1) PT90484B (en)
WO (1) WO1989010963A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1042567A (en) * 1988-09-23 1990-05-30 吉斯特-布罗卡迪斯公司 Steroid multistep method for oxidation and used genetically engineered cell
DE69122016T2 (en) * 1990-09-26 1997-04-30 Sumitomo Chemical Co Mitochondrial P450
US5240831A (en) * 1991-01-10 1993-08-31 Board Of Regents, The University Of Texas Methods and compositions for the expression of biologically active eukaryotic cytochrome p45os in bacteria
US5420027A (en) * 1991-01-10 1995-05-30 Board Of Regents, The University Of Texas System Methods and compositions for the expression of biologically active fusion proteins comprising a eukaryotic cytochrome P450 fused to a reductase in bacteria
GB9615032D0 (en) 1996-07-17 1996-09-04 Univ Dundee Enzyme system
US9255256B2 (en) 1996-07-17 2016-02-09 Btg International Limited Expression of functional cytochorome P450 monooxygenase system in enterobacteria
FR2820145B1 (en) * 2001-01-31 2004-01-23 Aventis Pharma Sa YEAST STRAIN PRODUCING INDEPENDENT STEROIDS
US20120178124A1 (en) * 2009-01-07 2012-07-12 Mitsubishi Chemical Corporation Sterol side chain-cleaving enzyme protein and use thereof
SG11201509965YA (en) * 2013-06-17 2016-01-28 Sanofi Sa Whole-cell system for cytochrome p450 monooxygenases biocatalysis
DK3097113T3 (en) * 2014-01-20 2019-04-23 Sanofi Sa HOW TO UNKNOWN CYTOCHROM P450 POLYPEPTIDE WITH INCREASED ENZYMATIC ACTIVITY
JP5800040B2 (en) * 2014-01-29 2015-10-28 三菱化学株式会社 Sterol side chain cleaving enzyme protein and use thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4720454A (en) * 1984-04-18 1988-01-19 White Perrin C Genetic probe used in the detection of adrenal hyperplasia

Also Published As

Publication number Publication date
KR900702022A (en) 1990-12-05
DE68929296T2 (en) 2001-12-06
KR100256025B1 (en) 2000-05-01
IL90207A (en) 1994-07-31
JPH11308991A (en) 1999-11-09
AU635494B2 (en) 1993-03-25
NZ229032A (en) 1992-06-25
JPH04500303A (en) 1992-01-23
CN1038667A (en) 1990-01-10
ES2157883T3 (en) 2001-09-01
IL90207A0 (en) 1989-12-15
NO904791L (en) 1991-01-04
DE68929296D1 (en) 2001-06-21
ATE201235T1 (en) 2001-06-15
PT90484B (en) 1994-08-31
JP2963711B2 (en) 1999-10-18
DK175573B1 (en) 2004-12-13
CA1340616C (en) 1999-06-29
HUT54413A (en) 1991-02-28
HU217411B (en) 2000-01-28
FI109605B (en) 2002-09-13
DK264890D0 (en) 1990-11-05
FI905464A0 (en) 1990-11-05
NO314267B1 (en) 2003-02-24
PT90484A (en) 1989-11-30
AU3575989A (en) 1989-11-29
WO1989010963A1 (en) 1989-11-16
NO904791D0 (en) 1990-11-05
HU893289D0 (en) 1990-12-28

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