发明名称 |
MATRIX METALLOPROTEINASE INHIBITOR PEPTIDES |
摘要 |
The present invention is an isolated protein of 21,600 daltons which binds t o both latent and activated type IV collagenase with high affinity at 1:1 molar stoichiometry, thereby abolishing enzyme activity. The protein is purified by affinity chromatography on solid phase metalloproteinase, or solid phase metalloproteinase substrates which bind the enzyme-inhibitor complex. The complete primary structure of this protein (initially called CSC-21K), as determined by sequencing overlapping peptides spanning the entire protein, reveals homology with a protein called TIMP, Tissue Inhibitor of Metalloproteinases. In addition, a cDNA for this novel inhibitor, now designated TIMP-2, was cloned from a melanoma cell and its sequence was compared with that of human TIMP-1. Northern blots of melanoma cell mRNA showed two distin ct transcripts of 0.9 kb and 3.5 kb which are down-regulated by transforming growth factor-beta, and are unchanged by phorbol ester treatment. The figure 7 shows the cDNA and corresponding protein sequence of TIMP-2.
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申请公布号 |
CA2046649(C) |
申请公布日期 |
2007.06.12 |
申请号 |
CA19902046649 |
申请日期 |
1990.03.21 |
申请人 |
THE UNITED STATES OF AMERICA, REPRESENTED BY THE SECRETARY, U.S. DEPARTM ENT |
发明人 |
STETLER-STEVENSON, WILLIAM G.;LIOTTA, LANCE A.;KRUTZSH, HENRY |
分类号 |
C12N15/15;A61K38/57;A61K39/395;C07K7/08;C07K14/81;C07K16/38;C12Q1/68;G01N33/573 |
主分类号 |
C12N15/15 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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