1887

Abstract

SUMMARY: Oakley & Warrack (1950) established the presence of two serologically distinct proteolytic enzymes in filtrates, a -toxin digesting native collagen and a cysteine-activated γ-toxin attacking azocoll and other protein substrates.

In the present paper we give evidence of another proteolytic enzyme, not activated by cysteine and serologically different from those previously described. This we designate as δ-toxin. We also indicate the possibility of the presence of a fourth enzyme more stable than the others and active against various synthetic substrates in conjunction with cysteine. This enzyme could not be inhibited by antisera. Furthermore peptidases have been detected and will be described in detail elsewhere.

Some of the differences between these enzyme systems are discussed.

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1958-02-01
2021-07-29
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