title: Biosynthesis of alpha-amylase and protease by Streptomyces olivaceus 142. I. Regulation of alpha-amylase activity.
abstract: Streptomyces olivaceus 142 produces amylase in the logarithmic phase of growth of the culture. The synthesis of the enzyme is induced by maltose and starch. In the case of maltose the synthesis is induced by a contaminating compound, probably being a higher than maltose polymer of glucose. The synthesis of amylase is negatively controlled by catabolic repression. The level of the activity of the enzyme depends not only on the biosynthesis but also on it proteolytic degradation.
mesh_terms: D000681:Amylases / Q000096:biosynthesis* / Q000378:metabolism; D004790:Enzyme Induction; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008320:Maltose / Q000494:pharmacology; D013213:Starch / Q000494:pharmacology; D013302:Streptomyces / Q000201:enzymology*
chemical_list: D008320:Maltose; D013213:Starch; D000681:Amylases