Rhamnogalacturonan rhamnohydrolase

Rhamnogalacturonan rhamnohydrolase
Identifiers
EC no.	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
Search PMC articles PubMed articles NCBI proteins

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.

The enzyme is part of the degradation system for rhamnogalacturonan I in Aspergillus aculeatus .

References

1. 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. Bibcode:1998BBRC..242..552P. doi:10.1006/bbrc.1997.8009. PMID   9464254.
2. 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 U.S. National Library of Medicine Medical Subject Headings (MeSH)