The Enzyme Database

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Accepted name: 3,5-dihydroxybiphenyl synthase
Reaction: 3 malonyl-CoA + benzoyl-CoA = 4 CoA + 3,5-dihydroxybiphenyl + 4 CO2
For diagram of polyketides biosynthesis, click here
Other name(s): BIS1; biphenyl synthase (ambiguous)
Systematic name: malonyl-CoA:benzoyl-CoA malonyltransferase
Comments: A polyketide synthase that is involved in the production of the phytoalexin aucuparin. 2-Hydroxybenzoyl-CoA can also act as substrate but it leads to the derailment product 4-hydroxycoumarin (cf. EC, 4-hydroxycoumarin synthase) [2]. This enzyme uses the same starter substrate as EC, benzophenone synthase.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 1217551-24-0
1.  Liu, B., Beuerle, T., Klundt, T. and Beerhues, L. Biphenyl synthase from yeast-extract-treated cell cultures of Sorbus aucuparia. Planta 218 (2004) 492–496. [DOI] [PMID: 14595561]
2.  Liu, B., Raeth, T., Beuerle, T. and Beerhues, L. Biphenyl synthase, a novel type III polyketide synthase. Planta 225 (2007) 1495–1503. [DOI] [PMID: 17109150]
[EC created 2006, modified 2012]

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