The purification of a novel amylase from Bacillus subtilis and its inhibition by wheat proteins.
Ontology highlight
ABSTRACT: A new alpha-amylase (EC 3.2.1.1) from Bacillus subtilis was purified by affinity chromatography. The molecular weight of the purified enzyme, estimated from sodium dodecyl sulphate/polyacrylamide-gel electrophoresis, was 93000, which is very different from the molecular weights of two well-characterized amylases from B. subtilis. Electrofocusing showed an isoelectric point of 5. Amylase shows a broad maximum of activity between pH 6 and 7; maximal inhibition of enzyme by wheat-protein alpha-amylase inhibitors is displayed at pH 7.
SUBMITTER: Orlando AR
PROVIDER: S-EPMC1154127 | biostudies-other | 1983 Feb
REPOSITORIES: biostudies-other
ACCESS DATA