2.0 2012-10-10 12:16:15 -0600 2015-06-03 17:25:55 -0600 ECMDB23095 M2MDB003485 Adenosylcobalamin 5'-phosphate Adenosylcobalamin 5'-phosphate is an intermediate in the synthesis of vitamin B12. Until recently it was believed that the last reaction in the biosynthesis of coenzyme B12 was the linking of alpha-ribazole (a product of 5,6-dimethylbenzimidazole ) to adenosylcobinamide-GDP, in a reaction catalyzed by cobalamin synthase. However, it was recently shown that the true substrate for the enzyme is alpha-ribazole-5'-P, and not alpha-ribazole, and that the product of the reaction is actually adenosylcobalamin 5'-phosphate. The dephosphorylation of adenosylcobalamin 5'-phosphate by the CobC protein leads to coenzyme B12. Adenosylcobalamin 5'-phosphoric acid C72H101CoN18O20P2 1659.5617 1658.62467598 λ²-cobalt(2+) ion 1-[(2S,3R,4S,5R)-3-hydroxy-4-{[hydroxy({[(2R)-1-({1-hydroxy-3-[(1R,2R,3R,4R,8S,13S,14S,18S,19S)-8,13,18-tris(2-carboximidatoethyl)-3,14,19-tris(C-hydroxycarbonimidoylmethyl)-1,4,6,9,9,14,16,19-octamethyl-20,21,22,23-tetraazapentacyclo[15.2.1.1²,⁵.1⁷,¹⁰.1¹²,¹⁵]tricosa-5(23),6,10(22),11,15(21),16-hexaen-4-yl]propylidene}amino)propan-2-yl]oxy})phosphoryl]oxy}-5-[(phosphonooxy)methyl]oxolan-2-yl]-5,6-dimethyl-3H-1λ⁵,3-benzodiazol-1-ylium [(2R,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-3,4-dihydroxyoxolan-2-yl]methyl λ²-cobalt(2+) ion 1-[(2S,3R,4S,5R)-3-hydroxy-4-({hydroxy[(2R)-1-({1-hydroxy-3-[(1R,2R,3R,4R,8S,13S,14S,18S,19S)-8,13,18-tris(2-carboximidatoethyl)-3,14,19-tris(C-hydroxycarbonimidoylmethyl)-1,4,6,9,9,14,16,19-octamethyl-20,21,22,23-tetraazapentacyclo[15.2.1.1²,⁵.1⁷,¹⁰.1¹²,¹⁵]tricosa-5(23),6,10(22),11,15(21),16-hexaen-4-yl]propylidene}amino)propan-2-yl]oxyphosphoryl}oxy)-5-[(phosphonooxy)methyl]oxolan-2-yl]-5,6-dimethyl-3H-1λ⁵,3-benzodiazol-1-ylium [(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methyl [Co++].[H][C@]1([CH2])O[C@@]([H])(N2C=NC3=C(N)N=CN=C23)[C@]([H])(O)[C@]1([H])O.[H][C@@](C)(CN=C(O)CC[C@@]1(C)C2=N[C@]([H])([C@]1([H])CC(O)=N)[C@]1(C)NC(=C(C)C3=NC(=CC4=NC(=C2C)[C@@]([H])(CCC([O-])=N)C4(C)C)[C@@]([H])(CCC([O-])=N)[C@]3(C)CC(O)=N)[C@@]([H])(CCC([O-])=N)[C@]1(C)CC(O)=N)OP(O)(=O)O[C@]1([H])[C@@]([H])(COP(O)(O)=O)O[C@]([H])([N+]2=CNC3=C2C=C(C)C(C)=C3)[C@]1([H])O InChI=1S/C62H91N13O17P2.C10H12N5O3.Co/c1-29-20-39-40(21-30(29)2)75(28-70-39)57-52(83)53(41(90-57)27-89-93(84,85)86)92-94(87,88)91-31(3)26-69-49(82)18-19-59(8)37(22-46(66)79)56-62(11)61(10,25-48(68)81)36(14-17-45(65)78)51(74-62)33(5)55-60(9,24-47(67)80)34(12-15-43(63)76)38(71-55)23-42-58(6,7)35(13-16-44(64)77)50(72-42)32(4)54(59)73-56;1-4-6(16)7(17)10(18-4)15-3-14-5-8(11)12-2-13-9(5)15;/h20-21,23,28,31,34-37,41,52-53,56-57,83H,12-19,22,24-27H2,1-11H3,(H17,63,64,65,66,67,68,69,71,72,73,74,76,77,78,79,80,81,82,84,85,86,87,88);2-4,6-7,10,16-17H,1H2,(H2,11,12,13);/q;;+2/p-2 ZKESCEDFYCGFMC-UHFFFAOYSA-L Membrane logp 0.99 ChemAxon pka_strongest_acidic 1.11 ChemAxon pka_strongest_basic 8.97 ChemAxon iupac λ²-cobalt(2+) ion 1-[(2S,3R,4S,5R)-3-hydroxy-4-{[hydroxy({[(2R)-1-({1-hydroxy-3-[(1R,2R,3R,4R,8S,13S,14S,18S,19S)-8,13,18-tris(2-carboximidatoethyl)-3,14,19-tris(C-hydroxycarbonimidoylmethyl)-1,4,6,9,9,14,16,19-octamethyl-20,21,22,23-tetraazapentacyclo[15.2.1.1²,⁵.1⁷,¹⁰.1¹²,¹⁵]tricosa-5(23),6,10(22),11,15(21),16-hexaen-4-yl]propylidene}amino)propan-2-yl]oxy})phosphoryl]oxy}-5-[(phosphonooxy)methyl]oxolan-2-yl]-5,6-dimethyl-3H-1λ⁵,3-benzodiazol-1-ylium [(2R,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-3,4-dihydroxyoxolan-2-yl]methyl ChemAxon average_mass 1659.5617 ChemAxon mono_mass 1658.62467598 ChemAxon smiles [Co++].[H][C@]1([CH2])O[C@@]([H])(N2C=NC3=C(N)N=CN=C23)[C@]([H])(O)[C@]1([H])O.[H][C@@](C)(CN=C(O)CC[C@@]1(C)C2=N[C@]([H])([C@]1([H])CC(O)=N)[C@]1(C)NC(=C(C)C3=NC(=CC4=NC(=C2C)[C@@]([H])(CCC([O-])=N)C4(C)C)[C@@]([H])(CCC([O-])=N)[C@]3(C)CC(O)=N)[C@@]([H])(CCC([O-])=N)[C@]1(C)CC(O)=N)OP(O)(=O)O[C@]1([H])[C@@]([H])(COP(O)(O)=O)O[C@]([H])([N+]2=CNC3=C2C=C(C)C(C)=C3)[C@]1([H])O ChemAxon formula C72H101CoN18O20P2 ChemAxon inchi InChI=1S/C62H91N13O17P2.C10H12N5O3.Co/c1-29-20-39-40(21-30(29)2)75(28-70-39)57-52(83)53(41(90-57)27-89-93(84,85)86)92-94(87,88)91-31(3)26-69-49(82)18-19-59(8)37(22-46(66)79)56-62(11)61(10,25-48(68)81)36(14-17-45(65)78)51(74-62)33(5)55-60(9,24-47(67)80)34(12-15-43(63)76)38(71-55)23-42-58(6,7)35(13-16-44(64)77)50(72-42)32(4)54(59)73-56;1-4-6(16)7(17)10(18-4)15-3-14-5-8(11)12-2-13-9(5)15;/h20-21,23,28,31,34-37,41,52-53,56-57,83H,12-19,22,24-27H2,1-11H3,(H17,63,64,65,66,67,68,69,71,72,73,74,76,77,78,79,80,81,82,84,85,86,87,88);2-4,6-7,10,16-17H,1H2,(H2,11,12,13);/q;;+2/p-2 ChemAxon inchikey ZKESCEDFYCGFMC-UHFFFAOYSA-L ChemAxon polar_surface_area 526.32 ChemAxon refractivity 441.71 ChemAxon polarizability 137.62 ChemAxon rotatable_bond_count 29 ChemAxon acceptor_count 25 ChemAxon donor_count 16 ChemAxon physiological_charge 2 ChemAxon formal_charge 0 ChemAxon Porphyrin and chlorophyll metabolism ec00860 Metabolic pathways eco01100 adenosylcobalamin salvage from cobinamide Cobinamide is incorporated from the extracellular space through a transport system into the cytosol. Once inside the cytosol, cobinamide interacts with ATP through a cobinamide adenosyl transferase resulting in the release of a triphosphate and an adenosylcobinamide. The latter compound is then phosphorylated through an ATP-dependent cobinamide kinase resulting in the release of ADP, a hydrogen ion and adenosyl-cobinamide phosphate. This last compound then interacts with GTP and a hydrogen ion through a cobinamide-P guanylyltransferase resulting in the release of a pyrophosphate and an adenosylcobinamide-GDP. A dimethylbenzimidazole interacts with a nicotinate D-ribonucleotide through a nicotinate-nucleotide dimethylbenzumidazole phosphoribosyltransferase resulting in the release of a nicotinate, a hydrogen ion and an alpha-ribazole 5' phosphate. The adenosylcobinamide-GDP and the alpha-ribazole 5' phosphate interact together through a cobalamin 5' phosphate synthase resulting in the release of a hydrogen ion, a GMP and Adenosylcobalamin 5'-phosphate. The latter compound then interacts with a water molecule through an adenosylcbalamin 5' phosphate phosphatase resulting in the release of a phosphate and a coenzyme B12. Likewise a cobalamin molecule can interact with ATP through a cobalamin adenosyltransferase resulting in the release of a triphosphate and a coenzyme B12 PW001884 Metabolic Specdb::CMs 1085055 Specdb::NmrOneD 296075 Specdb::NmrOneD 296076 Specdb::NmrOneD 296077 Specdb::NmrOneD 296078 Specdb::NmrOneD 296079 Specdb::NmrOneD 296080 Specdb::NmrOneD 296081 Specdb::NmrOneD 296082 Specdb::NmrOneD 296083 Specdb::NmrOneD 296084 Specdb::NmrOneD 296085 Specdb::NmrOneD 296086 Specdb::NmrOneD 296087 Specdb::NmrOneD 296088 Specdb::NmrOneD 296089 Specdb::NmrOneD 296090 Specdb::NmrOneD 296091 Specdb::NmrOneD 296092 Specdb::NmrOneD 296093 Specdb::NmrOneD 296094 Cobalamin synthase P36561 COBS_ECOLI cobS http://ecmdb.ca/proteins/P36561.xml Alpha-ribazole phosphatase P52086 COBC_ECOLI cobC http://ecmdb.ca/proteins/P52086.xml Adenosylcobinamide-GDP + N1-(alpha-D-ribosyl)-5,6-dimethyl-benzimidazole + N1-(5-Phospho-a-D-ribosyl)-5,6-dimethylbenzimidazole <> Guanosine monophosphate + Adenosylcobalamin + Adenosylcobalamin 5'-phosphate R05223 N1-(5-Phospho-a-D-ribosyl)-5,6-dimethylbenzimidazole + Adenosylcobinamide-GDP + Adenosylcobinamide-GDP > Hydrogen ion + GMP + Adenosylcobalamin 5'-phosphate PW_R005143 Adenosylcobalamin 5'-phosphate + Water > Phosphate + coenzyme B12 PW_R005144