Rabbit Anti-Human MMP14 polyclonal antibody for IHC-P. MMPs are a group of enzymes involved in matrix degradation. Of the sixteen members of the matrix metalloproteinase family, ten exist in soluble form whereas MT-MMPs exist as integral membrane proteins. MT1-MMP, MT2-MMP, MT3-MMP also known as MMP14, MMP15, MMP16 respectively, contain a C-terminal transmembrane domain anchoring them to the cell surface. They have an 8 amino acid insert in their catalytic domain. MT1-MMP cleaves progelatinase A (MMP-2) and progelatinase B to their active forms. MT1-MMP gets activated through the membrane plasmin cascade. It binds to TIMP-2 first and then to MMP-2 forming a trimer. It cleaves the pro-MMP-2 to its active form.