Tissue Inhibitor of Metalloproteinases
| Definition: |
A family of secreted proteins (TIMP-1; TIMP-2; and TIMP-3) that play a crucial role in regulating the activity of the secreted METALLOENDOPEPTIDASES (COLLAGENASES; stromelysins, GELATINASES). Of the three characterized, only TIMP-1 and TIMP-2 appear to have related primary structures and inhibitory properties. They influence the activation of the prometalloproteinase and act to modulate proteolysis of extracellular matrix, notably during tissue remodeling and inflammatory processes. On certain cell types, they can exhibit growth factor-like activity, and they can inhibit the tumorigenic and metastatic phenotype in cancer cells. (Pharmacol Ther 1993;59:329-41) |
| Notes: |
a family of protease inhibitors; GEN or unspecified; prefer specifics; DF: TIMP |
| Also Called: |
Collagenase Inhibitor |
| Previously Indexed: |
Enzyme Inhibitors (1989-1997),Glycoproteins (1980-1990) |
Tissue Inhibitor of Metalloproteinases Categories.
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Tissue Inhibitor of-Metalloproteinase-3 - A member of the family of TISSUE INHIBITOR OF METALLOPROTEINASES. It is a 21 kD, nonglycosylated protein. TIMP-3 does not show a high degree of structural similarity unlike TIMP-1 and TIMP-2 which are structurally similar. However, it does possess a high degree of structural similarity with that of chicken TIMP-3 (ChIMP-3). Human TIMP-3 is of particular concern because of its potential role in cancer, arthritis, and eye diseases. |
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Tissue Inhibitor-of Metalloproteinase-2 - A member of the family of TISSUE INHIBITOR OF METALLOPROTEINASES. It is a 21 kD nonglycosylated protein found in tissue fluid and is secreted as a complex with progelatinase A by human fibroblast and uncomplexed from alveolar macrophages. An overexpression of TIMP-2 has been shown to inhibit invasive and metastatic activity of tumor cells and decrease tumor growth in vivo. |
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Tissue-Inhibitor of Metalloproteinase-1 - A member of the family of TISSUE INHIBITOR OF METALLOPROTEINASES. It is a N-glycosylated protein, molecular weight 28 kD, produced by a vast range of cell types and found in a variety of tissues and body fluids. It has been shown to suppress metastasis and inhibit tumor invasion in vitro. |
Tissue Inhibitor of Metalloproteinases Definitions and Terms
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