Enzymes
| UniProtKB help_outline | 1,494 proteins |
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- Name help_outline precorrin-2 Identifier CHEBI:58827 Charge -7 Formula C42H41N4O16 InChIKeyhelp_outline OQIIYZQTTMKFAU-ZNLOQLQNSA-G SMILEShelp_outline C[C@]1(CC([O-])=O)[C@H](CCC([O-])=O)\C2=C\c3[nH]c(Cc4[nH]c(\C=C5/N=C(/C=C1\[NH2+]2)[C@@H](CCC([O-])=O)[C@]5(C)CC([O-])=O)c(CC([O-])=O)c4CCC([O-])=O)c(CCC([O-])=O)c3CC([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 5 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline S-adenosyl-L-methionine Identifier CHEBI:59789 Charge 1 Formula C15H23N6O5S InChIKeyhelp_outline MEFKEPWMEQBLKI-AIRLBKTGSA-O SMILEShelp_outline C[S+](CC[C@H]([NH3+])C([O-])=O)C[C@H]1O[C@H]([C@H](O)[C@@H]1O)n1cnc2c(N)ncnc12 2D coordinates Mol file for the small molecule Search links Involved in 924 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline precorrin-3A Identifier CHEBI:58561 Charge -7 Formula C43H43N4O16 InChIKeyhelp_outline AILJETHLKULYHE-IHDLTXBCSA-G SMILEShelp_outline C\C1=C2\[NH2+]\C(=C/C3=N/C(=C\c4[nH]c(Cc5[nH]c1c(CC([O-])=O)c5CCC([O-])=O)c(CCC([O-])=O)c4CC([O-])=O)[C@@H](CCC([O-])=O)[C@]3(C)CC([O-])=O)[C@@H](CCC([O-])=O)[C@]2(C)CC([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 2 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline S-adenosyl-L-homocysteine Identifier CHEBI:57856 Charge 0 Formula C14H20N6O5S InChIKeyhelp_outline ZJUKTBDSGOFHSH-WFMPWKQPSA-N SMILEShelp_outline Nc1ncnc2n(cnc12)[C@@H]1O[C@H](CSCC[C@H]([NH3+])C([O-])=O)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 840 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H+ Identifier CHEBI:15378 Charge 1 Formula H InChIKeyhelp_outline GPRLSGONYQIRFK-UHFFFAOYSA-N SMILEShelp_outline [H+] 2D coordinates Mol file for the small molecule Search links Involved in 9,717 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:16841 | RHEA:16842 | RHEA:16843 | RHEA:16844 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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Expression of 9 Salmonella typhimurium enzymes for cobinamide synthesis. Identification of the 11-methyl and 20-methyl transferases of corrin biosynthesis.
Roessner C.A., Warren M.J., Santander P.J., Atshaves B.P., Ozaki S., Stolowich N.J., Iida K., Scott A.I.
Nine of the cbi genes from the 17.5 kb cob operon of Salmonella typhimurium previously shown by genetic studies to be involved in the biosynthesis of cobinamide from precorrin-2, have been subcloned and expressed in Escherichia coli. Seven of the gene products were found in the soluble fraction of ... >> More
Nine of the cbi genes from the 17.5 kb cob operon of Salmonella typhimurium previously shown by genetic studies to be involved in the biosynthesis of cobinamide from precorrin-2, have been subcloned and expressed in Escherichia coli. Seven of the gene products were found in the soluble fraction of cell lysates and have been purified. The gene products corresponding to cbi E, F, H and L were shown by SAM binding and by homology with other SAM-binding proteins to be candidates for the methyltransferases of vitamin B12 biosynthesis. The enzymatic functions of the gene products of cbiL and cbiF are associated with C-methylation at C-20 of precorrin-2 and C-11 of precorrin-3. << Less
FEBS Lett. 301:73-78(1992) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.
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Overexpression in Escherichia coli of 12 vitamin B12 biosynthetic enzymes.
Roessner C.A., Spencer J.B., Ozaki S., Min C., Atshaves B.P., Nayar P., Anousis N., Stolowich N.J., Holderman M.T., Scott A.I.
The first 12 enzymes involved in the biosynthesis of vitamin B12 from its five-carbon precursor, aminolevulinic acid, have been overexpressed in recombinant strains of Escherichia coli. The activity of each enzyme has been demonstrated by the biosynthesis of hydrogenobyrinic acid from aminolevulin ... >> More
The first 12 enzymes involved in the biosynthesis of vitamin B12 from its five-carbon precursor, aminolevulinic acid, have been overexpressed in recombinant strains of Escherichia coli. The activity of each enzyme has been demonstrated by the biosynthesis of hydrogenobyrinic acid from aminolevulinic acid. << Less
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Biosynthesis of the corrin macrocycle of coenzyme B12 in Pseudomonas denitrificans.
Debussche L., Thibaut D., Cameron B., Crouzet J., Blanche F.J.
Studies with cell-free protein preparations from a series of recombinant strains of Pseudomonas denitrificans demonstrated that precorrin-3 is converted into a further trimethylated intermediate, named precorrin-3B, along the pathway to coenzyme B12. It was then shown that the part of the pathway ... >> More
Studies with cell-free protein preparations from a series of recombinant strains of Pseudomonas denitrificans demonstrated that precorrin-3 is converted into a further trimethylated intermediate, named precorrin-3B, along the pathway to coenzyme B12. It was then shown that the part of the pathway from precorrin-3 (called precorrin-3A hereafter) to precorrin-6x involves three intermediates, precorrin-3B, precorrin-4, and precorrin-5. Precorrin-3B was isolated in its native (reduced) as well as its oxidized (factor-IIIB) states, and precorrin-4 was isolated in its oxidized form only (factor-IV). Both factors were in vitro precursors of precorrin-6x. The synthesis of precorrin-6x from precorrin-3A was shown to be catalyzed by four enzymes, CobG, CobJ, CobM, and CobF, intervening in this order. They were purified to homogeneity. CobG, which converts precorrin-3A to precorrin-3B, was found to be an iron-sulfur protein responsible for the oxidation known to occur between precorrin-3A and precorrin-6x, and CobJ, CobM, and CobF are the C-17, C-11, and C-1 methylases, respectively. The acetate fragment is extruded after precorrin-4 formation. This study combined with our recent structural studies on factor-IV (D. Thibaut, L. Debussche, D. Fréchet, F. Herman, M. Vuilhorgne, and F. Blanche, J. Chem. Soc. Chem. Commun. 1993:513-515, 1993) and precorrin-3B (L. Debussche, D. Thibaut, M. Danzer, F. Debu, D. Fréchet, F. Herman, F. Blanche, and M. Vuilhorgne, J. Chem. Soc. Chem. Commun. 1993:1100-1103, 1993) provides a first step-by-step picture of the sequence of the enzymatic reactions leading to the corrin ring in P. denitrificans. << Less
J. Bacteriol. 175:7430-7440(1993) [PubMed] [EuropePMC]
This publication is cited by 3 other entries.