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  • Title: Cloning of cDNAs encoding human TIMP-3, a novel member of the tissue inhibitor of metalloproteinase family.
    Author: Silbiger SM, Jacobsen VL, Cupples RL, Koski RA.
    Journal: Gene; 1994 Apr 20; 141(2):293-7. PubMed ID: 8163205.
    Abstract:
    Proteins of the tissue inhibitor of metalloproteinase (TIMP) family bind and inactivate matrix metalloproteinases such as collagenases and gelatinases. We report the cloning and sequencing of cDNAs encoding a novel human TIMP, which we designated TIMP-3, the third member of the human TIMP family. Degenerate PCR primers derived from highly conserved regions of TIMP family cDNAs amplified a 402-bp product from human fetal kidney cDNA. This product and a related 333-bp PCR product were used as probes to screen two cDNA libraries. Three TIMP-3 cDNA clones were isolated, including a 1240-bp fetal kidney clone that contained a complete TIMP-3 precursor coding region of 211 amino acids (aa). The deduced precursor protein includes twelve Cys and 27 other aa that are invariant in the TIMP family. The predicted aa sequence is 89, 39 and 46% identical to those of ChIMP-3, human TIMP-1 and human TIMP-2, respectively. Northern blot analyses detected three TIMP-3 mRNA bands of 2.2, 2.5 and 4.4 kb in several human cell lines.
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