MMP-1 Active Protein

Proteins of the matrix metalloproteinase (MMP) family are involved in the breakdown of extracellular matrix in normal physiological processes, such as embryonic development, reproduction, and tissue remodeling, as well as in disease processes, such as arthritis and metastasis. Most MMP's are secreted as inactive proproteins which are activated when cleaved by extracellular proteinases. This gene encodes a secreted enzyme which breaks down the interstitial collagens, types I, II, and III. The gene is part of a cluster of MMP genes which localize to chromosome 11q22.3. Alternative splicing results in multiple transcript variants.[provided by RefSeq, Mar 2009]

MMP1: Cleaves collagens of types I, II, and III at one site in the helical domain. Also cleaves collagens of types VII and X. In case of HIV infection, interacts and cleaves the secreted viral Tat protein, leading to a decrease in neuronal Tat's mediated neurotoxicity. Belongs to the peptidase M10A family.

Protein type: Protease; Secreted, signal peptide; EC 3.4.24.7; Motility/polarity/chemotaxis; Secreted

Chromosomal Location of Human Ortholog: 11q22.3

Cellular Component: proteinaceous extracellular matrix; extracellular region

Molecular Function: zinc ion binding; metalloendopeptidase activity; endopeptidase activity; calcium ion binding

Biological Process: positive regulation of protein oligomerization; extracellular matrix disassembly; collagen catabolic process; extracellular matrix organization and biogenesis; cellular protein metabolic process; viral reproduction; blood coagulation; proteolysis; leukocyte migration

Disease: Epidermolysis Bullosa Dystrophica, Autosomal Recessive; Pulmonary Disease, Chronic Obstructive