Crystal Structure of Mycolic Acid Cyclopropane Synthase PcaA Complexed with S-adenosyl-L-homocysteineCrystal Structure of Mycolic Acid Cyclopropane Synthase PcaA Complexed with S-adenosyl-L-homocysteine
Structural highlights
1l1e is a 2 chain structure with sequence from Mycobacterium tuberculosis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
CMAS3_MYCTU Involved in the phagosome maturation block (PMB). Catalyzes the conversion of a double bond to a cyclopropane ring at the proximal position of an alpha mycolic acid via the transfer of a methylene group from S-adenosyl-L-methionine. It can use cis, cis 11,14-eicosadienoic acid and linoelaidic acid as substrate. Cyclopropanated mycolic acids are key factors participating in cell envelope permeability, host immunomodulation and persistence.[1][2]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
References
↑Glickman MS, Cox JS, Jacobs WR Jr. A novel mycolic acid cyclopropane synthetase is required for cording, persistence, and virulence of Mycobacterium tuberculosis. Mol Cell. 2000 Apr;5(4):717-27. PMID:10882107 doi:10.1016/s1097-2765(00)80250-6
↑Corrales RM, Molle V, Leiba J, Mourey L, de Chastellier C, Kremer L. Phosphorylation of mycobacterial PcaA inhibits mycolic acid cyclopropanation: consequences for intracellular survival and for phagosome maturation block. J Biol Chem. 2012 Jul 27;287(31):26187-99. PMID:22621931 doi:10.1074/jbc.M112.373209
