Reaction: Exohydrolysis of the α-D-GalA-(1→2)-α-L-Rha bond in rhamnogalacturonan oligosaccharides with initial inversion of configuration releasing D-galacturonic acid from the non-reducing end of rhamnogalacturonan oligosaccharides.
For diagram of reaction click here.
Other name(s): RG-galacturonohydrolase
Systematic name: rhamnogalacturonan oligosaccharide α-D-GalA-(1→2)-α-L-Rha galacturonohydrolase
Comments: The enzyme is part of the degradation system for rhamnogalacturonan I in Aspergillus aculeatus.
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number:
References:
1. Mutter, M., Beldman, G., Pitson, S.M., Schols, H.A. and Voragen, A.G. Rhamnogalacturonan α-D-galactopyranosyluronohydrolase. An enzyme that specifically removes the terminal nonreducing galacturonosyl residue in rhamnogalacturonan regions of pecti. Plant Physiol. 117 (1998) 153-163. [PMID: 9576784]