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Glycoside Hydrolase Family 112

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Glycoside Hydrolase Family 112
Clan none
Mechanism inverting
Active site residues known
CAZy DB link
http://www.cazy.org/fam/GH112.html

Substrate specificities

This family contains beta-galactoside phosphorolyzing enzymes, β-1,3-D-galactosyl-D-hexososamine phosphorylase [1] and β-1,4-D-gaactosyl-L-rhamnose phosphorylase [2]. The former enzymes are subcategorized into galacto-N-biose phosphorylase, (GNBP) [3], lacto-N-biose I phosphorylase (LNBP) [4], and galacto-N-biose/lacto-N-biose I phosphorylase (GLNBP) [1,4,5] based on the substrate preference on galacto-N-biose (GNB, Gal-β1,3-GalNAc) and lacto-N-biose I (LNB, Gal-β1,3-GlcNAc) [4].

Kinetics and Mechanism

Catalytic Residues

Three-dimensional structures

Family Firsts

First sterochemistry determination
First catalytic nucleophile identification
First general acid/base residue identification
First 3-D structure
Cite some reference here, with a short explanation [1].

References

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  1. Error fetching PMID 19124470: [REF1]