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==References==
==References==
{{reflist|2}}
* {{MeshName|Tissue+Inhibitor+of+Metalloproteinases}}
* {{MeshName|Tissue+Inhibitor+of+Metalloproteinases}}
* {{Cite journal|author=Brew K, Dinakarpandian D, Nagase H |title=Tissue inhibitors of metalloproteinases: evolution, structure and function |journal=Biochim Biophys Acta |volume=1477 |issue=1–2 |pages=267–83 |year=2000 |pmid=10708863|doi=10.1016/S0167-4838(99)00279-4}}
* {{Cite journal|author=Brew K, Dinakarpandian D, Nagase H |title=Tissue inhibitors of metalloproteinases: evolution, structure and function |journal=Biochim Biophys Acta |volume=1477 |issue=1–2 |pages=267–83 |year=2000 |pmid=10708863|doi=10.1016/S0167-4838(99)00279-4}}



[[Category:Human proteins]]
[[Category:Human proteins]]

Revision as of 15:35, 15 July 2012

The matrix metalloproteinases are inhibited by specific endogenous tissue inhibitors of metalloproteinases (TIMPs), which comprise a family of four protease inhibitors: TIMP1, TIMP2, TIMP3 and TIMP4.

Overall, all MMPs are inhibited by TIMPs once they are activated but the gelatinases (MMP-2 and MMP-9) can form complexes with TIMPs when the enzymes are in the latent form.

The complex of latent MMP-2 (pro-MMP-2)with TIMP-2 serves to facilitate the activation of pro-MMP-2 at the cell surface by MT1-MMP (MMP-14), a membrane-anchored MMP.

The role of the pro-MMP-9/TIMP-1 complex is still unknown.

Regulation of TIMP expression

In adrenocortical cells the trophic hormone ACTH induces expression of TIMP-1 and the increase in TIMP expression is also associated with decreased collagaenase activity.[1]

References

  1. ^ Reichenstein, M.; Reich, R.; LeHoux, JG.; Hanukoglu, I. (2004). "ACTH induces TIMP-1 expression and inhibits collagenase in adrenal cortex cells". Mol Cell Endocrinol. 215 (1–2): 109–14. doi:10.1016/j.mce.2003.11.011. PMID 15026182. {{cite journal}}: Unknown parameter |month= ignored (help)