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Inhibition of Proliferation of ECV304 Cells by a Disintegrin from Chinese Green Tree Viper

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A novel disintegrin, stejnin, was purified from the Trimeresurus stejnegeri venom by gel filtration and reverse phase high performance liquid chromatography. The molecular weight of stejnin was determined to be 7428 Da by MALD-TOF MS analysis. The cDNA encoding the precursor of stejnin was cloned from the venom gland. From the deduced amino acid sequence, stejnin is composed of 71 amino acid residues contains the tripeptide sequence Arg-Gly-Asp (RGD), a well-known characteristic of the disintegrin family. Stejnin strongly inhibited ADP- and ristomycin-induced human platelet aggregation with IC50 of 45 and 50 nM, respectively. Stejnin also possessed potent inhibited cell proliferation of ECV304 cells.

Keywords: disintegrin; ecv cells; platelet aggregation; snake venom

Document Type: Research Article


Publication date: 2007-05-01

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  • Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.
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