Molecular mechanism of type I collagen homotrimer resistance to mammalian collagenases.
Type I collagen cleavage is crucial for tissue remodeling, but its homotrimeric isoform is resistant to all collagenases. The homotrimers occur in fetal tissues, fibrosis, and cancer, where their collagenase resistance may play an important physiological role. To understand the mechanism of this resistance, we studied interactions of alpha1(I)(3) homotrimers and normal alpha1(I)(2)alpha2(I) heterotrimers with fibroblast collagenase (MMP-1). Similar MMP-1 binding to the two isoforms and simila...Expand abstract
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