2bba

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{{STRUCTURE_2bba| PDB=2bba | SCENE= }}
{{STRUCTURE_2bba| PDB=2bba | SCENE= }}
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'''Crystal Structure and Thermodynamic Characterization of the EphB4 Receptor in Complex with an ephrin-B2 Antagonist Peptide Reveals the Determinants for Receptor Specificity'''
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===Crystal Structure and Thermodynamic Characterization of the EphB4 Receptor in Complex with an ephrin-B2 Antagonist Peptide Reveals the Determinants for Receptor Specificity===
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==Overview==
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The Eph receptor tyrosine kinases and their ligands, the ephrins, regulate numerous biological processes in developing and adult tissues and have been implicated in cancer progression and in pathological forms of angiogenesis. We report the crystal structure of the EphB4 receptor in complex with a highly specific antagonistic peptide at a resolution of 1.65 angstroms. The peptide is situated in a hydrophobic cleft of EphB4 corresponding to the cleft in EphB2 occupied by the ephrin-B2 G-H loop, consistent with its antagonistic properties. Structural analysis identifies several residues within the EphB4 binding cleft that likely determine the ligand specificity of this receptor, while isothermal titration calorimetry experiments with truncated forms of the peptide define the amino acid residues of the peptide that are critical for receptor binding. These studies reveal structural features that will aid drug discovery initiatives to develop EphB4 antagonists for therapeutic applications.
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{{ABSTRACT_PUBMED_16472751}}
==About this Structure==
==About this Structure==
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[[Category: Peptide mimetic]]
[[Category: Peptide mimetic]]
[[Category: Tumorigenesis]]
[[Category: Tumorigenesis]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 20:04:05 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 16:30:48 2008''

Revision as of 13:30, 29 July 2008

Image:2bba.png

Template:STRUCTURE 2bba

Crystal Structure and Thermodynamic Characterization of the EphB4 Receptor in Complex with an ephrin-B2 Antagonist Peptide Reveals the Determinants for Receptor Specificity

Template:ABSTRACT PUBMED 16472751

About this Structure

2BBA is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structure and thermodynamic characterization of the EphB4/Ephrin-B2 antagonist peptide complex reveals the determinants for receptor specificity., Chrencik JE, Brooun A, Recht MI, Kraus ML, Koolpe M, Kolatkar AR, Bruce RH, Martiny-Baron G, Widmer H, Pasquale EB, Kuhn P, Structure. 2006 Feb;14(2):321-30. PMID:16472751

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