Identification of 3-ketosteroid 9-alfa-hydroxylase genes and...

Chemistry: molecular biology and microbiology – Enzyme – proenzyme; compositions thereof; process for... – Oxidoreductase

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C536S023200

Reexamination Certificate

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10504034

ABSTRACT:
The invention relates to an isolated polynucleotide sequence comprising a nucleic acid sequence encoding the amino acid sequence of KshA protein or of KshB protein, encoded by nucleotides 499–1695 of SEQ ID NO: 1 or by nucleotides 387–1427 of SEQ ID NO:2, respectively, and functional homologues thereof. The polynucleotides of the invention can be used to construct genetically modified microorganisms blocked in 3-ketosteroid 9α-hydroxylase activity, which are useful in the microbial degradation of steroids to accumulate certain steroid products.

REFERENCES:
patent: WO 01/31050 (2001-05-01), None
Targeted Disruption of the kstD Gene Encoding a 3-Ketosteroid 1-Dehydrogenase Isoenzyme ofRhodococcus erythropolisStrain SQ1. Applied and Environmental Microbiology, May 2000, p. 2029-2036, vol. 66, No. 5.
Kosono et al or Maeda et al. Three of the seven bphC genes ofRhodococcus erythropolisTA41, isolated from a termite ecosystem, are located onan indigenous plasmid associated with biphenyl degradation. Applied and environmental Microbiology. Aug. 1997, p. 3282-3285. see accession No. D88013.
Lipman et al., “Rapid and Sensitive Protein Similarity Searches,” Science, vol. 227, pp. 1435-1141, (Mar. 22, 1985).
Dutta et al., “Role of plasmid pJL1 ofArthrobacter oxydans317 in the degradation of β-sitosterol,” J. Basic Microbiol., vol. 32, No. 5, pp. 317-324 (1992).
Strijewski, “The Steroid-9α-Hydroxylation System fromNocardiaSpecies,” Eur. J. Biochem., vol. 128, pp. 125-135 (1982).
Chang et al., “Mechanisms of Steroid Oxidation by Microorganisms.” VII. Properties of the 9α-Hydroxylase, vol. 3, No. 10, pp. 1551-1557 (Oct. 1964).
Mahato et al., “Advances in microbial steroid biotransformation,” Steroids vol. 62, pp. 332-345 (Apr. 1997).
Wovcha et al., “Bioconversion Of Sitosterol To Useful Steroidal Intermediates By Mutants OfMycobacterium fortuitum,” Biochemica et Biophysica Acta, vol. 531 pp. 308-321 (1978).
Datcheva et al., “Synthesis Of 9α-Hydroxysteroids By ARhodococcusSp.,” Steroids, vol. 54, No. 3, pp. 271-286 (Sep. 1989).
Van der Geize et al., “Unmarked gene deletion mutagenesis of kstD, encoding 3-ketosteroid Δ1-dehydrogenase, inRhodococcus erythropolisSQ1 using sacB as counter-selectable marker,” FEMS Microbiology Letters 205, pp. 197-202 (2001).
Maeda et al., “Multiple Genes Encoding 2,3-Dihydroxybiphenyl 1,2-Dioxygenase in the Gram-Positive Polychlorinated Biphenyl-Degrading BacteriumRhodococcus erythropolisTA421, Isolated from a Termite Ecosystem,” Applied and Environmental Microbiology, vol. 61, No. 2, pp. 549-555 (Feb. 1995).
Vogt Singer et al., “Construction of anEscherichia coli-RhodococcusShuttle Vector and Plasmid Transformation inRhodococcusspp.,” Journal Of Bacteriology, vol. 170, No. 2, pp. 638-645 (Feb. 1988).
Jager et al., “Expression of theBacillus subtilissacB Gene Leads to Sucrose Sensitivity in the Gram-Positive BacteriumCorynebacterium glutamicumbut Not inStreptomyces lividans,” Journal of Bacteriology, vol. 174, No. 16, pp. 5462-5465 (Aug. 1992).
Cole et al., “Deciphering the biology ofMycobacterium tuberculosisfrom the complete genome sequence,” Nature, vol. 393, pp. 537-544 (1998).
Thompson et al., “Clustal W: improving the sensitivity of progressive multiple sequence alignment through sequence weighting, position-specific gap penalties and weight matrix choice,” Nucleic Acids Research, vol. 22, No. 22, pp. 4673-4680 (1994).
Kieslich, “Microbial side-chain degradation of sterols1, ” J. Basic Microbiol., vol. 25, No. 7, pp. 461-474 (1985).
AF096929 Database EMBL ′Online!, (2000).
Van Der Geize R. et al “Targeted Disruption of the kstD Gene Encoding . . . ”Applied and Environmental Microbio. ,May 2000, US, V66 N5 P 2029-2036, XP002157019.
Database EMBL ′Online!,Rhodococcusoxygenase reductase KshB, Jun. 3, 2002, XP002249468.
Van Der Geize R et al “Molecular and functional characterization of kshA and kshB, encoding two components of 3-ketosteroid 9alpha-hydroxylase, a class IA . . . ” Molecular Microbio.
Database D88013 ′Online! EMBl; oxygenase, Apr. 18, 1998 XP002207042.
Database EMBL ′Online!Rhodococcus erythropolisterminal oxygenase KshA, Jun. 3, 2004 XP002249469.
Database EMBL′Online “DszD utlization in desulfurizaiton of DBT . . . ” Gray Sep. 29, 1999, XP002264155.

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