Biology:Rhamnogalacturonan rhamnohydrolase

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Rhamnogalacturonan rhamnohydrolase
Identifiers
EC number3.2.1.174
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum

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. "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. January 1998. doi:10.1006/bbrc.1997.8009. PMID 9464254. 
  2. "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. September 1994. doi:10.1104/pp.106.1.241. PMID 7972516. 

External links