L-rhamnonate dehydratase
In enzymology, a L-rhamnonate dehydratase (EC 4.2.1.90) is an enzyme that catalyzes the chemical reaction
- L-rhamnonate 2-dehydro-3-deoxy-L-rhamnonate + H2O
| L-rhamnonate dehydratase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 4.2.1.90 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
| |||||||||
Hence, this enzyme has one substrate, L-rhamnonate, and two products, 2-dehydro-3-deoxy-L-rhamnonate and H2O.
This enzyme belongs to the family of lyases, specifically the hydro-lyases, which cleave carbon-oxygen bonds. The systematic name of this enzyme class is L-rhamnonate hydro-lyase (2-dehydro-3-deoxy-L-rhamnonate-forming). This enzyme is also called L-rhamnonate hydro-lyase. This enzyme participates in fructose and mannose metabolism.
Structural studies
As of late 2007, 4 structures have been solved for this class of enzymes, with PDB accession codes 2GSH, 2OZ3, 2P0I, and 2P3Z.
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References
- Rigo LU, Marechal LR, Vieira MM, Veiga LA (1985). "Oxidative pathway for L-rhamnose degradation in Pullularia pullulans". Can. J. Microbiol. 31 (9): 817–822. doi:10.1139/m85-153.
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