Rhamnogalacturonan rhamnohydrolase
Rhamnogalacturonan rhamnohydrolase (EC 3.2.1.174, RG-rhamnohydrolase, RG alpha-L-rhamnopyranohydrolase) is an enzyme with systematic name rhamnogalacturonan oligosaccharide alpha-L-Rha-(1->4)-alpha-D-GalA rhamnohydrolase.[1][2] This enzyme catalyses the following chemical reaction
- Exohydrolysis of the alpha-L-Rha-(1->4)-alpha-D-GalA bond in rhamnogalacturonan oligosaccharides with initial inversion of configuration releasing beta-L-rhamnose from the non-reducing end of rhamnogalacturonan oligosaccharides.
| Rhamnogalacturonan rhamnohydrolase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 3.2.1.174 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| |||||||||
The enzyme is part of the degradation system for rhamnogalacturonan I in Aspergillus aculeatus.
References
- Pitson SM, Mutter M, van den Broek LA, Voragen AG, Beldman G (January 1998). "Stereochemical course of hydrolysis catalysed by alpha-L-rhamnosyl and alpha-D-galacturonosyl hydrolases from Aspergillus aculeatus". Biochemical and Biophysical Research Communications. 242 (3): 552–9. doi:10.1006/bbrc.1997.8009. PMID 9464254.
- Mutter M, Beldman G, Schols HA, Voragen AG (September 1994). "Rhamnogalacturonan alpha-L-rhamnopyranohydrolase. A novel enzyme specific for the terminal nonreducing rhamnosyl unit in rhamnogalacturonan regions of pectin". Plant Physiology. 106 (1): 241–50. doi:10.1104/pp.106.1.241. PMC 159522. PMID 7972516.
External links
- Rhamnogalacturonan+rhamnohydrolase at the US National Library of Medicine Medical Subject Headings (MeSH)
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