Title : Biosynthesis of steroidal antibiotic fusidanes: functional analysis of oxidosqualene cyclase and subsequent tailoring enzymes from Aspergillus fumigatus.

Pub. Date : 2009 May 13

PMID : 19415934






5 Functional Relationships(s)
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1 One of these genes, Afu4g14770, designated AfuOSC3, is clustered with genes of cytochrome P450 monooxygenases (P450s), a short-chain dehydrogenase/reductase (SDR), and acyltransferases, which presumably function in triterpene tailoring steps, suggesting that this gene cluster codes for helvolic acid biosynthesis. Triterpenes short-chain dehydrogenase/reductase Saccharomyces cerevisiae S288C
2 One of these genes, Afu4g14770, designated AfuOSC3, is clustered with genes of cytochrome P450 monooxygenases (P450s), a short-chain dehydrogenase/reductase (SDR), and acyltransferases, which presumably function in triterpene tailoring steps, suggesting that this gene cluster codes for helvolic acid biosynthesis. Triterpenes short-chain dehydrogenase/reductase Saccharomyces cerevisiae S288C
3 One of these genes, Afu4g14770, designated AfuOSC3, is clustered with genes of cytochrome P450 monooxygenases (P450s), a short-chain dehydrogenase/reductase (SDR), and acyltransferases, which presumably function in triterpene tailoring steps, suggesting that this gene cluster codes for helvolic acid biosynthesis. helvolic acid short-chain dehydrogenase/reductase Saccharomyces cerevisiae S288C
4 One of these genes, Afu4g14770, designated AfuOSC3, is clustered with genes of cytochrome P450 monooxygenases (P450s), a short-chain dehydrogenase/reductase (SDR), and acyltransferases, which presumably function in triterpene tailoring steps, suggesting that this gene cluster codes for helvolic acid biosynthesis. helvolic acid short-chain dehydrogenase/reductase Saccharomyces cerevisiae S288C
5 To further identify the function of triterpene tailoring enzymes, four P450 genes (CYP5081A1-D1) and a SDR gene (AfuSDR1) in the cluster were each coexpressed with AfuOSC3 in yeast. Triterpenes short-chain dehydrogenase/reductase Saccharomyces cerevisiae S288C