2rfn: Difference between revisions
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[[Image:2rfn.jpg|left|200px]] | [[Image:2rfn.jpg|left|200px]] | ||
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'''x-ray structure of c-Met with inhibitor.''' | '''x-ray structure of c-Met with inhibitor.''' | ||
==Overview== | |||
c-Met is a receptor tyrosine kinase often deregulated in human cancers, thus making it an attractive drug target. One mechanism by which c-Met deregulation leads to cancer is through gain-of-function mutations. Therefore, small molecules capable of targeting these mutations could offer therapeutic benefits for affected patients. SU11274 was recently described and reported to inhibit the activity of the wild-type and some mutant forms of c-Met, whereas other mutants are resistant to inhibition. We identified a novel series of c-Met small molecule inhibitors that are active against multiple mutants previously identified in hereditary papillary renal cell carcinoma patients. AM7 is active against wild-type c-Met as well as several mutants, inhibits c-Met-mediated signaling in MKN-45 and U-87 MG cells, and inhibits tumor growth in these two models grown as xenografts. The crystal structures of AM7 and SU11274 bound to unphosphorylated c-Met have been determined. The AM7 structure reveals a novel binding mode compared with other published c-Met inhibitors and SU11274. The molecule binds the kinase linker and then extends into a new hydrophobic binding site. This binding site is created by a significant movement of the C-helix and so represents an inactive conformation of the c-Met kinase. Thus, our results demonstrate that it is possible to identify and design inhibitors that will likely be active against mutants found in different cancers. | |||
==Disease== | ==Disease== | ||
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==About this Structure== | ==About this Structure== | ||
2RFN is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2RFN OCA]. | 2RFN is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2RFN OCA]. | ||
==Reference== | |||
c-Met inhibitors with novel binding mode show activity against several hereditary papillary renal cell carcinoma-related mutations., Bellon SF, Kaplan-Lefko P, Yang Y, Zhang Y, Moriguchi J, Rex K, Johnson CW, Rose PE, Long AM, O'Connor AB, Gu Y, Coxon A, Kim TS, Tasker A, Burgess TL, Dussault I, J Biol Chem. 2008 Feb 1;283(5):2675-83. Epub 2007 Nov 30. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/18055465 18055465] | |||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Receptor protein-tyrosine kinase]] | [[Category: Receptor protein-tyrosine kinase]] | ||
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[[Category: Yang, Y.]] | [[Category: Yang, Y.]] | ||
[[Category: Zhang, Y.]] | [[Category: Zhang, Y.]] | ||
[[Category: | [[Category: Atp-binding]] | ||
[[Category: | [[Category: C-met hgf receptor tyrosine kinse kinase domain]] | ||
[[Category: | [[Category: Glycoprotein]] | ||
[[Category: | [[Category: Membrane]] | ||
[[Category: | [[Category: Nucleotide-binding]] | ||
[[Category: | [[Category: Phosphorylation]] | ||
[[Category: | [[Category: Proto-oncogene]] | ||
[[Category: | [[Category: Transferase]] | ||
[[Category: | [[Category: Transmembrane]] | ||
[[Category: | [[Category: Tyrosine-protein kinase]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Apr 16 23:08:08 2008'' | |||
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