The Enzyme Database

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EC 5.4.99.32     
Accepted name: protostadienol synthase
Reaction: (3S)-2,3-epoxy-2,3-dihydrosqualene = (17Z)-protosta-17(20),24-dien-3β-ol
For diagram of cucurbitadienol, cycloartenol, lanosterol and prostadienol biosynthesis, click here
Other name(s): PdsA; (S)-2,3-epoxysqualene mutase [cyclizing, (17Z)-protosta-17(20),24-dien-3β-ol-forming]
Systematic name: (3S)-2,3-epoxy-2,3-dihydrosqualene mutase [cyclizing, (17Z)-protosta-17(20),24-dien-3β-ol-forming]
Comments: (17Z)-Protosta-17(20),24-dien-3β-ol is a precursor of the steroidal antibiotic helvolic acid.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Lodeiro, S., Xiong, Q., Wilson, W.K., Ivanova, Y., Smith, M.L., May, G.S. and Matsuda, S.P. Protostadienol biosynthesis and metabolism in the pathogenic fungus Aspergillus fumigatus. Org. Lett. 11 (2009) 1241–1244. [DOI] [PMID: 19216560]
[EC 5.4.99.32 created 2011]
 
 


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