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ENZYME entry: EC 5.3.3.23
Accepted Name |
S-methyl-5-thioribulose 1-phosphate isomerase.
|
Alternative Name(s) |
5-methylthioribulose-1-phosphate isomerase. |
Reaction catalysed |
- S-methyl-5-thio-D-ribulose 1-phosphate <=> S-methyl-1-thio-D-xylulose 5-phosphate
- S-methyl-5-thio-D-ribulose 1-phosphate <=> S-methyl-1-thiol-D-ribulose 5-phosphate
|
Comment(s) |
- The enzyme, characterized from the bacterium Rhodospirillum rubrum,
participates in methionine salvage from S-methyl-5'-thioadenosine.
- It is a RuBisCO-like protein (RLP) that is not capable of carbon
fixation, and catalyzes an isomerization reaction that converts
S-methyl-5-thio-D-ribulose 1-phosphate to a 3:1 mixture of S-methyl-
1-thioxylulose 5-phosphate and S-methyl-1-thioribulose 5-phosphate.
- The reaction is an overall 1,3-proton transfer, which likely consists
of two 1,2-proton transfer events.
|
Cross-references |
BRENDA | 5.3.3.23 |
EC2PDB | 5.3.3.23 |
ExplorEnz | 5.3.3.23 |
PRIAM enzyme-specific profiles | 5.3.3.23 |
KEGG Ligand Database for Enzyme Nomenclature | 5.3.3.23 |
IUBMB Enzyme Nomenclature | 5.3.3.23 |
IntEnz | 5.3.3.23 |
MEDLINE | Find literature relating to 5.3.3.23 |
MetaCyc | 5.3.3.23 |
Rhea expert-curated reactions | 5.3.3.23 |
UniProtKB/Swiss-Prot |
|
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ENZYME /
UniProtKB/Swiss-Prot entries corresponding to 5.3.3.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 5.3.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 5.-.-.-