Rhamnogalacturonan galacturonohydrolase

Rhamnogalacturonan galacturonohydrolase
Identifiers
EC number 3.2.1.173
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum

Rhamnogalacturonan galacturonohydrolase (EC 3.2.1.173, RG-galacturonohydrolase) is an enzyme with systematic name rhamnogalacturonan oligosaccharide alpha-D-GalA-(1->2)-alpha-L-Rha galacturonohydrolase.[1] This enzyme catalyses the following chemical reaction

Exohydrolysis of the alpha-D-GalA-(1->2)-alpha-L-Rha bond in rhamnogalacturonan oligosaccharides with initial inversion of configuration releasing D-galacturonic acid from the non-reducing end of rhamnogalacturonan oligosaccharides.

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

References

  1. Mutter, M.; Beldman, G.; Pitson, S.M.; Schols, H.A.; Voragen, A.G. (1998). "Rhamnogalacturonan α-D-galactopyranosyluronohydrolase. An enzyme that specifically removes the terminal nonreducing galacturonosyl residue in rhamnogalacturonan regions of pectin". Plant Physiol. 117: 153–163. doi:10.1104/pp.117.1.153. PMID 9576784.
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