SUMMARY: Oakley & Warrack (1950) established the presence of two serologically distinct proteolytic enzymes in filtrates, a β-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.


Article metrics loading...

Loading full text...

Full text loading...


Most cited this month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error