ID   3.2.1.157
DE   iota-carrageenase.
CA   Endohydrolysis of 1,4-beta-D-linkages between D-galactose 4-sulfate and
CA   3,6-anhydro-D-galactose-2-sulfate in iota-carrageenans.
CC   -!- The main products of hydrolysis are iota-neocarratetraose sulfate and
CC       iota-neocarrahexaose sulfate.
CC   -!- Iota-neocarraoctaose is the shortest substrate oligomer that can be
CC       cleaved.
CC   -!- Unlike EC 3.2.1.81 and EC 3.2.1.83, this enzyme proceeds with
CC       inversion of the anomeric configuration.
CC   -!- Iota-carrageenan differs from kappa-carrageenan by possessing a sulfo
CC       group on O-2 of the 3,6-anhydro-D-galactose residues, in addition to
CC       that present in the kappa-compound on O-4 of the D-galactose
CC       residues.
DR   Q9F5I8, CGIA_ALTMA ;  Q9F284, CGIA_ZOBGA ;
//