Reaction: 4 malonyl-CoA = (3,5-dihydroxyphenylacetyl)-CoA + 3 CoA + 4 CO2 + H2O
Other name(s): DpgA
Systematic name: malonyl-CoA:malonyl-CoA malonyltransferase (3,5-dihydroxyphenylacetyl-CoA-forming)
Comments: The enzyme, characterized from the bacterium Amycolatopsis mediterranei, is involved in biosynthesis of the nonproteinogenic amino acid (S)-3,5-dihydroxyphenylglycine, a component of the vancomycin-type antibiotic balhimycin.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number:
References:
1. Pfeifer, V., Nicholson, G.J., Ries, J., Recktenwald, J., Schefer, A.B., Shawky, R.M., Schroder, J., Wohlleben, W. and Pelzer, S. A polyketide synthase in glycopeptide biosynthesis: the biosynthesis of the non-proteinogenic amino acid (S)-3,5-dihydroxyphenylglycine. J. Biol. Chem. 276 (2001) 38370-38377. [PMID: 11495926]
2. Chen, H., Tseng, C.C., Hubbard, B.K. and Walsh, C.T. Glycopeptide antibiotic biosynthesis: enzymatic assembly of the dedicated amino acid monomer (S)-3,5-dihydroxyphenylglycine. Proc. Natl. Acad. Sci. USA 98 (2001) 14901-14906. [PMID: 11752437]
3. Tseng, C.C., McLoughlin, S.M., Kelleher, N.L. and Walsh, C.T. Role of the active site cysteine of DpgA, a bacterial type III polyketide synthase. Biochemistry 43 (2004) 970-980. [PMID: 14744141]
4. Wu, H.C., Li, Y.S., Liu, Y.C., Lyu, S.Y., Wu, C.J. and Li, T.L. Chain elongation and cyclization in type III PKS DpgA. Chembiochem 13 (2012) 862-871. [PMID: 22492619]