IUBMB Enzyme Nomenclature


Accepted name: rhamnogalacturonan galacturonohydrolase

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:


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]

[EC created 2011]

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