IUPAC 名称
lambda2-cobalt(2+) ion 3-[13-(3-azanidyl-3-oxopropyl)-4-{2-[(2-{[hydroxy({[4-hydroxy-2-(hydroxymethyl)-5-(5-methyl-1-methylidene-3H-1lambda5,3-benzodiazol-3-yl)oxolan-3-yl]oxy})phosphoryl]oxy}propyl)-C-hydroxycarbonimidoyl]ethyl}-18-[2-(C-hydroxycarbonimidoyl)ethyl]-3,14,19-tris[(C-hydroxycarbonimidoyl)methyl]-1,4,6,9,9,14,16,19-octamethyl-20,21,22,23-tetraazapentacyclo[15.2.1.1^{2,5}.1^{7,10}.1^{12,15}]tricosa-5(23),6,10(22),11,15(21),16-hexaen-8-yl]propanecarboximidate
描述
Cob(I)alamin is the substrate of the enzyme ATP:cob(I)alamin adenosyltransferase (EC 2.5.1.17), that converts reduced cob(I)alamin to the adenosylcobalamin co-factor required for the functional activity of methylmalonyl-CoA mutase (EC 5.4.99.2). Mutations in the human MMAB gene result in a block in adenosylcobalamin synthesis and are responsible for the cblB complementation group of inherited vitamin B12 disorders. Vitamin B12 (cobalamin) is a complex cobalt-containing molecule that is essential to human health. It is synthesized in bacteria where it catalyzes numerous methyl transfer and intramolecular rearrangement reactions. In mammals, it is the co-factor of only two enzymes: methionine synthase, which catalyzes the transfer of a methyl group from methyltetrahydrofolate to homocysteine to form methionine, and methylmalonyl-CoA mutase, which catalyzes the rearrangement of methylmalonyl-CoA to form succinyl-CoA. For both enzymes, the vitamin must be modified through intracellular metabolism to co-factor forms: methylcobalamin (MeCbl)1 for methionine synthase and adenosylcobalamin (AdoCbl) for methylmalonyl-CoA mutase. (PMID: 16439175) [HMDB]
InChI标识符
InChI=1S/C62H90N13O14P.Co/c1-30-12-16-39-40(22-30)75(29-74(39)11)57-52(84)53(41(28-76)87-57)89-90(85,86)88-31(2)27-69-49(83)20-21-59(7)37(23-46(66)80)56-62(10)61(9,26-48(68)82)36(15-19-45(65)79)51(73-62)33(4)55-60(8,25-47(67)81)34(13-17-43(63)77)38(70-55)24-42-58(5,6)35(14-18-44(64)78)50(71-42)32(3)54(59)72-56;/h12,16,22,24,29,31,34-37,41,52-53,56-57,76,84H,11,13-15,17-21,23,25-28H2,1-10H3,(H15,63,64,65,66,67,68,69,70,71,72,73,77,78,79,80,81,82,83,85,86);/q;+2/p-2