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EC 4.2.2.26 Details
EC number
4.2.2.26
Accepted name
oligo-alginate lyase
Reaction
Cleavage of poly(4-deoxy-α-L-erythro-hexopyranuronoside) oligosaccharides with 4-deoxy-α-L-erythro-hex-4-enopyranuronosyl groups at their non-reducing ends into 4-deoxy-α-L-erythro-hex-4-enopyranuronate monosaccharides.
Other name(s)
aly (gene name) (ambiguous), oalS17 (gene name), oligoalginate lyase, exo-oligoalginate lyase
Systematic name
alginate oligosaccharide 4-deoxy-α-L-erythro-hex-4-enopyranuronate-(1→4)-hexananopyranuronate lyase
Comment
The enzyme degrades unsaturated oligosaccharides produced by the action of alginate lyases (EC 4.2.2.3 and EC 4.2.2.11) on alginate, by repeatedly removing the unsaturated residue from the non-reducing end until only unsaturated monosaccharides are left. The enzyme catalyses a β-elimination reaction, generating a new unsaturated non-reducing end after removal of the pre-existing one.
History
created 2015
EC Tree
1.14.13.45 created 1992, deleted 2003