Gellan lyase

Gellan lyase
Identifiers
EC number 4.2.2.25
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum

Gellan lyase (EC 4.2.2.25) is an enzyme with systematic name gellan beta-D-glucopyranosyl-(1->4)-D-glucopyranosyluronate lyase.[1][2][3] This enzyme catalyses the following chemical reaction

Eliminative cleavage of beta-D-glucopyranosyl-(1->4)-beta-D-glucopyranosyluronate bonds of gellan backbone releasing tetrasaccharides containing a 4-deoxy-4,5-unsaturated D-glucopyranosyluronic acid at the non-reducing end.

The tetrasaccharide produced from deacetylated gellan is beta-D-4-deoxy-Delta4-GlcAp-(1->4)-beta-D-Glcp-(1->4)-alpha-L-Rhap-(1->3)-beta-D-Glcp.

References

  1. Hashimoto, W.; Maesaka, K.; Sato, N.; Kimura, S.; Yamamoto, K.; Kumagai, H.; Murata, K. (1997). "Microbial system for polysaccharide depolymerization: enzymatic route for gellan depolymerization by Bacillus sp. GL1". Arch. Biochem. Biophys. 339: 17–23. doi:10.1006/abbi.1996.9851. PMID 9056228.
  2. Hashimoto, W.; Sato, N.; Kimura, S.; Murata, K. (1998). "Polysaccharide lyase: molecular cloning of gellan lyase gene and formation of the lyase from a huge precursor protein in Bacillus sp. GL1". Arch. Biochem. Biophys. 354: 31–39. doi:10.1006/abbi.1998.0674. PMID 9633595.
  3. Miyake, O.; Kobayashi, E.; Nankai, H.; Hashimoto, W.; Mikami, B.; Murata, K. (2004). "Posttranslational processing of polysaccharide lyase: maturation route for gellan lyase in Bacillus sp. GL1". Arch. Biochem. Biophys. 422: 211–220. doi:10.1016/j.abb.2003.12.015. PMID 14759609.
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