3x44

Structural highlights

Function

[DCSD_STRLA] Involved in the biosynthesis of the antibiotic D-cycloserine (DCS), a cyclic structural analog of D-alanine, used as an antitubercular agent. Catalyzes the addition of hydroxyurea on O-acetyl-L-serine (OAS) to yield O-ureido-L-serine. It prefers sulfide as the second substrate, followed by hydroxyurea, L-homocysteine, and thiosulfate.^{[1] [2]}

References

1. ↑ Kumagai T, Koyama Y, Oda K, Noda M, Matoba Y, Sugiyama M. Molecular cloning and heterologous expression of a biosynthetic gene cluster for the antitubercular agent D-cycloserine produced by Streptomyces lavendulae. Antimicrob Agents Chemother. 2010 Mar;54(3):1132-9. doi: 10.1128/AAC.01226-09., Epub 2010 Jan 19. PMID:20086163 doi:http://dx.doi.org/10.1128/AAC.01226-09
2. ↑ Uda N, Matoba Y, Kumagai T, Oda K, Noda M, Sugiyama M. Establishment of an in vitro D-cycloserine-synthesizing system by using O-ureido-L-serine synthase and D-cycloserine synthetase found in the biosynthetic pathway. Antimicrob Agents Chemother. 2013 Jun;57(6):2603-12. doi: 10.1128/AAC.02291-12., Epub 2013 Mar 25. PMID:23529730 doi:http://dx.doi.org/10.1128/AAC.02291-12