here we report that the 72-kda type iv procollagenase purified from hras-transformed human bronchial epithelial cells , sv40-transformed lung fibroblasts , and normal skin fibroblasts exists in a stable but noncovalent stoichiometric complex with a 24-kda inhibitor referred to here as `` '' timp-2 . '' ''
C0079471
hras
C0086418
human