Collagenase-3 Mmp13 MMP-13 + Clg MMP-13|interstitial collagenase|Collagenase-3|collagenase-1|Clg|Mmp1 protein coding gene matrix metallopeptidase 13 genetic mapping collagenase-1 Gene O MGI:1340026 Mmp1 http://identifiers.org/mgd/MGI:1340026 interstitial collagenase