EC Number |
Substrates |
Organism |
Products |
Reversibility |
---|
2.1.1.90 | mercaptopropionate + methylcob(III)alamin |
- |
Methanosarcina acetivorans |
? |
- |
? |
2.1.1.90 | more |
analysis of mtaCB gene regulation in Methanosarcina acetivorans |
Methanosarcina acetivorans |
? |
- |
? |
2.1.1.90 | more |
coenzyme M does not serve as a methyl acceptor. Methylation of cob(I)alamin with methanol, dimethylsulfide, dimethylamine, and methyl-CoM is not observed, even at high substrate concentrations |
Methanosarcina acetivorans |
? |
- |
- |
2.1.1.90 | methanol + a [Co(I) methanol-specific corrinoid protein] |
- |
Methanosarcina barkeri |
a [methyl-Co(III) methanol-specific corrinoid protein] + H2O |
- |
? |
2.1.1.90 | methanol + a [Co(I) methanol-specific corrinoid protein] |
- |
Methanosarcina mazei |
a [methyl-Co(III) methanol-specific corrinoid protein] + H2O |
- |
? |
2.1.1.90 | methanol + a [Co(I) methanol-specific corrinoid protein] |
- |
Methanosphaera stadtmanae |
a [methyl-Co(III) methanol-specific corrinoid protein] + H2O |
- |
? |
2.1.1.90 | methanol + a [Co(I) methanol-specific corrinoid protein] |
- |
Methanomethylovorans hollandica |
a [methyl-Co(III) methanol-specific corrinoid protein] + H2O |
- |
? |
2.1.1.90 | methanol + a [Co(I) methanol-specific corrinoid protein] |
first of two enzymes involved in the transmethylation reaction from methanol to 2-mercaptoethanesulfonic acid in. The enzyme only binds the methyl group of methanol when the cobalt atom of its corrinoid prosthetic groups is present in the highly reduced Co(I) state. Formation of this redox state requires H2, hydrogenase, methyltransferase activation protein, and ATP. Purified enzyme contains 1.7 corrinoids per enzyme with cobalt in the fully oxidized Co(III) state. Water and N-3 of the 5-hydroxybenzimidazolyl base serve as the upper and lower ligands, respectively. Reduction to the Co(II) level is accomplished by H2 and hydrogenase. The cob(II)amide of the enzyme has the base coordinated at this stage. Subsequent addition of methyltransferase activation protein and ATP results in the formation of base-uncoordinated Co(II) enzyme |
Methanosarcina barkeri |
a [methyl-Co(III) methanol-specific corrinoid protein] + H2O |
- |
? |
2.1.1.90 | methanol + a [Co(I) methanol-specific corrinoid protein] |
- |
Methanosarcina mazei DSM 3647 |
a [methyl-Co(III) methanol-specific corrinoid protein] + H2O |
- |
? |
2.1.1.90 | methanol + a [Co(I) methanol-specific corrinoid protein] |
- |
Methanosarcina barkeri DSM 800 |
a [methyl-Co(III) methanol-specific corrinoid protein] + H2O |
- |
? |