Function
Alpha-amylase that cleaves starch into oligosaccharides, the first step in starch degradation (By similarity). Endo-acting enzyme which prefers a linear polysaccharide to branched polysaccharides hydrolyzing alpha-1,4 glucosidic bonds efficiently. Has also transglycosylation activity, but does not act on alpha-1,6 bonds. Higher activities of 100%, 79% and 67.8% against amylose, soluble starch and amylopectin, respectively. Lower activity of 22% against glycogen and faint or no activity against alpha-, beta- and gamma-cyclodextrin.
Sequence
MHHPGPPRFVATGDEVELAPRDPDPTATYTWRLTQAPAQSTVSLGDDPVEHFVPDAPGRYVVRLTAPDGEHDLTVRAFPGTLESSGTHTSGRSGGHSGGVSGGRSGPGRSGSGEYTQAGDGSDGGGGGQPRLTLRPDIEGDEAVVRADCSPHPEGTETAADLAVEFLLDDRDDVDADAVTRDGTALRIPLDALPERARIHAVAVGNHGYSVPDAVEFTRGGDGVETVTSGAGVAARRPYDAPAWAEDSVIYEIYVRTFAGERDESPFDAITDRLDYLDSLGVDAIWLTPVLQNDHAPHGYNITDFFEIASDLGTRADYERFIEAAHDRGFKVLFDLVCNHSARTHPYFESAVEGPDADYREWYEWRSDTEPETYFEWEHIANFNFDHLPVRRHLLDAVAQWADLVDGFRCDMAWAVPNGFWREIHDYCKDRDSEFLLLDETIPYIPDFQAGLFDMHFDSTTYAALRQVGGGGDAEAILGAIEGRAEIGFPEHASFMLYAENHDETRYIVDYGREAAEAAAGALFTLPGAPLLYAGQEFGQRGRRDDLAWDHADETLQSFVSDLASARHDQPALSADADLVRIPYEVRDGPSDRVVAYARTTENDAAVVVLNFGSEPTTVGLPAGTDGTDLVSGEYRGAAGDGDATVTVDSVSVFPADENDLRQ