ENTRY       EC 3.2.1.2
NAME        beta-Amylase
            Saccharogen amylase
            Glycogenase
CLASS       Hydrolases
            Glycosidases
            Hydrolysing O-glycosyl compounds
SYSNAME     1,4-alpha-D-Glucan maltohydrolase
REACTION    Hydrolysis of 1,4-alpha-D-glucosidic linkages in polysaccharides
            so as to remove successive maltose units from the non-rducing ends
            of the chains
SUBSTRATE   Polysaccharide
            Starch
            Glycogen
            H2O
PRODUCT     Maltose
COMMENT     Acts on starch, glycogen and related polysaccharides and
            oligosaccharides producing beta-maltose by an inversion.
PATHWAY     PATH: MAP00500  Starch and sucrose metabolism
MOTIF       PS: PS00506  H-x-C-G-G-N-V-G-D
            PS: PS00679  G-x-[SA]-G-E-[LIVM]-R-Y-P-S-Y
STRUCTURES  PDB: 1BYB  1BTC  1BYA  1BYC  1BYD  
DBLINKS     University of Geneva ENZYME DATA BANK: 3.2.1.2
            WIT (What Is There) Metabolic Reconstruction: 3.2.1.2
            SCOP (Structural Classificaion of Proteins): 3.2.1.2
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