Rhamnogalacturonan exolyase

Rhamnogalacturonan exolyase (EC 4.2.2.24, YesX) is an enzyme with systematic name alpha-L-rhamnopyranosyl-(1->4)-alpha-D-galactopyranosyluronate exolyase.[1][2] This enzyme catalyses the following chemical reaction

Exotype eliminative cleavage of alpha-L-rhamnopyranosyl-(1->4)-alpha-D-galactopyranosyluronic acid bonds of rhamnogalacturonan I oligosaccharides containing alpha-L-rhamnopyranose at the reducing end and 4-deoxy-4,5-unsaturated D-galactopyranosyluronic acid at the non-reducing end.
Rhamnogalacturonan exolyase
Identifiers
EC number4.2.2.24
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum

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

References

  1. Ochiai A, Itoh T, Mikami B, Hashimoto W, Murata K (April 2009). "Structural determinants responsible for substrate recognition and mode of action in family 11 polysaccharide lyases". The Journal of Biological Chemistry. 284 (15): 10181–9. doi:10.1074/jbc.m807799200. PMC 2665072. PMID 19193638.
  2. Ochiai A, Itoh T, Kawamata A, Hashimoto W, Murata K (June 2007). "Plant cell wall degradation by saprophytic Bacillus subtilis strains: gene clusters responsible for rhamnogalacturonan depolymerization". Applied and Environmental Microbiology. 73 (12): 3803–13. doi:10.1128/aem.00147-07. PMC 1932723. PMID 17449691.
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