Enzymes
| UniProtKB help_outline | 5 proteins |
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- Name help_outline precorrin-6B Identifier CHEBI:58532 Charge -6 Formula C44H50N4O16 InChIKeyhelp_outline NWRSYSRVTYBWJV-WFECKALKSA-H SMILEShelp_outline C[C@@]12CC3=C(CCC([O-])=O)[C@](C)(CC([O-])=O)C(/C=C4\[NH2+][C@@](C)([C@@H]5N=C(\C=C([NH2+]1)\C(CCC([O-])=O)=C2CC([O-])=O)[C@](C)(CCC([O-])=O)[C@H]5CC([O-])=O)[C@@](C)(CC([O-])=O)[C@@H]4CCC([O-])=O)=N3 2D coordinates Mol file for the small molecule Search links Involved in 3 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline NADP+ Identifier CHEBI:58349 Charge -3 Formula C21H25N7O17P3 InChIKeyhelp_outline XJLXINKUBYWONI-NNYOXOHSSA-K SMILEShelp_outline NC(=O)c1ccc[n+](c1)[C@@H]1O[C@H](COP([O-])(=O)OP([O-])(=O)OC[C@H]2O[C@H]([C@H](OP([O-])([O-])=O)[C@@H]2O)n2cnc3c(N)ncnc23)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 1,326 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline precorrin-6A Identifier CHEBI:77872 Charge -7 Formula C44H47N4O16 InChIKeyhelp_outline SOHWQLUTRKYCGZ-YTMGQXKNSA-G SMILEShelp_outline C[C@@]12CC3=C(CCC([O-])=O)[C@](C)(CC([O-])=O)C(\C=C4/N[C@@](C)(C5=C(CC([O-])=O)[C@@](C)(CCC([O-])=O)C(CC(=N1)C(CCC([O-])=O)=C2CC([O-])=O)=N5)[C@@](C)(CC([O-])=O)[C@@H]4CCC([O-])=O)=[NH+]3 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 NADPH Identifier CHEBI:57783 (Beilstein: 10411862) help_outline Charge -4 Formula C21H26N7O17P3 InChIKeyhelp_outline ACFIXJIJDZMPPO-NNYOXOHSSA-J SMILEShelp_outline NC(=O)C1=CN(C=CC1)[C@@H]1O[C@H](COP([O-])(=O)OP([O-])(=O)OC[C@H]2O[C@H]([C@H](OP([O-])([O-])=O)[C@@H]2O)n2cnc3c(N)ncnc23)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 1,320 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 9,836 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:23408 | RHEA:23409 | RHEA:23410 | RHEA:23411 | |
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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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The biosynthesis of adenosylcobalamin (vitamin B12).
Warren M.J., Raux E., Schubert H.L., Escalante-Semerena J.C.
Vitamin B12, or cobalamin, is one of the most structurally complex small molecules made in Nature. Major progress has been made over the past decade in understanding how this synthesis is accomplished. This review covers some of the most important findings that have been made and provides the read ... >> More
Vitamin B12, or cobalamin, is one of the most structurally complex small molecules made in Nature. Major progress has been made over the past decade in understanding how this synthesis is accomplished. This review covers some of the most important findings that have been made and provides the reader with a complete description of the transformation of uroporphyrinogen III into adenosylcobalamin (AdoCbl). 183 references are cited. << Less
Nat Prod Rep 19:390-412(2002) [PubMed] [EuropePMC]
This publication is cited by 16 other entries.
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Precorrin-6x reductase from Pseudomonas denitrificans: purification and characterization of the enzyme and identification of the structural gene.
Blanche F., Thibaut D., Famechon A., Debussche L., Cameron B., Crouzet J.
Precorrin-6x reductase, which catalyzes the NADPH-dependent reduction of precorrin-6x to a dihydro derivative named precorrin-6y, was purified 14,300-fold to homogeneity with an 8% yield from extracts of a recombinant strain of Pseudomonas denitrificans. Precorrin-6y was identified by fast atom bo ... >> More
Precorrin-6x reductase, which catalyzes the NADPH-dependent reduction of precorrin-6x to a dihydro derivative named precorrin-6y, was purified 14,300-fold to homogeneity with an 8% yield from extracts of a recombinant strain of Pseudomonas denitrificans. Precorrin-6y was identified by fast atom bombardment-mass spectrometry. It was converted in high yield (90%) to hydrogenobyrinic acid by cell-free protein preparations from P. denitrificans. For the purification and characterization of precorrin-6x reductase, a coupled-enzyme radioenzymatic assay was developed in which precorrin-6y was methylated in situ by the cobL gene product (F. Blanche, A. Famechon, D. Thibaut, L. Debussche, B. Cameron, J. Crouzet, J. Bacteriol. 174:1050-1052, 1992) in the presence of [methyl-3H]S-adenosyl-L-methionine. Molecular weights of precorrin-6x reductase obtained by gel filtration (Mr congruent to 27,000) and by analytical sodium dodecyl sulfate-polyacrylamide gel electrophoresis (Mr congruent to 31,000) were consistent with the enzyme being a monomer. Km values of 3.6 +/-0.2 microM for precorrin-6x and 23.5 +/-3.5 microM for NADPH and a Vmax value of 17,000 U mg-1 were obtained at pH 7.7. The N-terminal sequence (six amino acids) and three internal sequences obtained after tryptic digestion of the enzyme were determined by microsequencing and established that precorrin-6x reductase is encoded by the cobK gene, located on a previously described 8.7-kb EcoRI fragment (J. Crouzet, B. Cameron, L. Cauchois, S. Rigault, M.-C. Rouyez, F. Blanche, D. Thibaut, and L. Debussche, J. Bacteriol. 172:5980-5990, 1990). However, the coding sequence was shown to be on the strand complementary to the one previously proposed as the coding strand. << Less