Major secreted subtilisin-like serine endopeptidase (PubMed:25785714). Mediates the degradation of collagen, the major structural protein in the mammalian host. Degrades the nonhelical regions of collagen that function in the cross-linking of the helical components (By similarity). May function as virulence factor involved in epidermal wing necrosis observed in white nose syndrome (WNS) in bats (Probable). Optimum pH is 6 to 8. Optimum temperature is 60 degrees Celsius. Belongs to the peptidase S8 family.