A pyridoxal-phosphate protein. This enzyme is unable to decarboxylate the D-isomer of threonine O-3-phosphate. The product of this reaction, (R)-1-aminopropan-2-yl phosphate, is the substrate of EC 18.104.22.168, adenosylcobinamide-phosphate synthase, which converts adenosylcobyric acid into adenosylcobinamide phosphate in the anaerobic cobalamin biosynthesis pathway.
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crystals belong to space group I222 with unit cell dimensions a : 66.6 A, b : 103.2 A, and c : 117.1 A, apo-CobD crystals belong to space group I222 with unit cell dimensions a : 76.0 A, b : 103.3 A, and c : 109.3 A
CobD, a novel enzyme with L-threonine-O-3-phosphate decarboxylase activity, is responsible for the synthesis of (R)-1-amino-2-propanol O-2-phosphate, a proposed new intermediate in cobalamin biosynthesis in Salmonella typhimurium LT2