Secretory Leucocyte Protease Inhibitor in the Male Genital Tract : PSA‐Induced Proteolytic Processing in Human Semen and Tissue Localization
ABSTRACT: Secretory leucocyte protease inhibitor, SLPI, is a low‐molecular‐weight, acid‐stable protein present in the liquid part of fresh human ejaculate but not demonstrable in the gel structure. No fragmentation of SLPI occurred during gel dissolution, but a slow proteolytic cleavage of SLPI was seen on incubation of the liquified semen at 37°C. The same pattern of degradation products was seen