Studies on the Proteolytic Enzyme of Black Aspergilli

Part III. The Specificity of Crystalline Aspergillus Saitoi Proteinase on Synthetic Substrates

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The crystalline proteinase from Aspergillus Saitoi hydrolysed both α-benzoyl-L-argininea-mide and carbobenzoxy-L-glutamyl-L-tyrosine optimally at pH 4.5, and the action on these substrates was studied.
It was recognized that this enzyme is unique among the well-known proteinases. In the wheat bran extract of Aspergillus sojae, the presence of proteinase analogous to Aspergillus Saitoi is presumed.