ExplorEnz: EC 3.2.1.172

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3.2.1.172

Accepted name:

unsaturated rhamnogalacturonyl hydrolase

Reaction:

2-O-(4-deoxy-β-L-threo-hex-4-enopyranuronosyl)-α-L-rhamnopyranose + H₂O = 5-dehydro-4-deoxy-D-glucuronate + L-rhamnopyranose

For diagram of ramnosylgalacturan degradation, click here

Glossary:

6-deoxy-2-O-(4-deoxy-β-L-threo-hex-4-enopyranuronosyl)-α-L-mannopyranose = 2-O-(4-deoxy-β-L-threo-hex-4-enopyranuronosyl)-α-L-rhamnopyranose
5-dehydro-4-deoxy-D-glucuronate = (4S,5R)-4,5-dihydroxy-2,6-dioxohexanoate

Other name(s):

YteR; YesR

Systematic name:

2-O-(4-deoxy-β-L-threo-hex-4-enopyranuronosyl)-α-L-rhamnopyranose hydrolase

Comments:

The enzyme is part of the degradation system for rhamnogalacturonan I in Bacillus subtilis strain 168.

Links to other databases:

BRENDA, EXPASY, KEGG, MetaCyc, PDB

References:

1.	Itoh, T., Ochiai, A., Mikami, B., Hashimoto, W. and Murata, K. A novel glycoside hydrolase family 105: the structure of family 105 unsaturated rhamnogalacturonyl hydrolase complexed with a disaccharide in comparison with family 88 enzyme complexed with the disaccharide. J. Mol. Biol. 360 (2006) 573–585. [DOI] [PMID: 16781735]
2.	Zhang, R., Minh, T., Lezondra, L., Korolev, S., Moy, S.F., Collart, F. and Joachimiak, A. 1.6 Å crystal structure of YteR protein from Bacillus subtilis, a predicted lyase. Proteins 60 (2005) 561–565. [DOI] [PMID: 15906318]
3.	Itoh, T., Ochiai, A., Mikami, B., Hashimoto, W. and Murata, K. Structure of unsaturated rhamnogalacturonyl hydrolase complexed with substrate. Biochem. Biophys. Res. Commun. 347 (2006) 1021–1029. [DOI] [PMID: 16870154]

[EC 3.2.1.172 created 2011, modified 2012]