2gnn | pdb_00002gnn

Crystal Structure of the Orf Virus NZ2 Variant of VEGF-E

spinqualitylabelsall models 2gnn, resolution 2.30Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2gnn is a 4 chain structure with sequence from Orfn2. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: BEN, CL, GOL, NAG, SO4, TRS Related: 1vpf, 1fzv, 1wq8, 1wq9 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [VEGFH_ORFN2] Induces endothelial proliferation. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Mammalian vascular endothelial growth factors constitute a family of polypeptides, vascular endothelial growth factor (VEGF)-A, -B, -C, -D and placenta growth factor (PlGF), that regulate blood and lymphatic vessel development. VEGFs bind to three types of receptor tyrosine kinases, VEGF receptors 1, 2, and 3, that are predominantly expressed on endothelial and some hematopoietic cells. Pox viruses of the Orf family encode highly related proteins called VEGF-E that show only 25-35% amino acid identity with VEGF-A but bind with comparable affinity to VEGFR-2. The crystal structure of VEGF-E NZ2 described here reveals high similarity to the known structural homologs VEGF-A, PlGF, and the snake venoms Vammin and VR-1, which are all homodimers and contain the characteristic cysteine knot motif. Distinct conformational differences are observed in loop L1 and particularly in L3, which contains a highly flexible GS-rich motif that differs from all other structural homologs. Based on our structure, we created chimeric proteins by exchanging selected segments in L1 and L3 with the corresponding sequences from PlGF. Single loop mutants did not bind to either receptor, whereas a VEGF-E mutant in which both L1 and L3 were replaced gained affinity for VEGFR-1, illustrating the possibility to engineer receptor-specific chimeric VEGF molecules. In addition, changing arginine 46 to isoleucine in L1 significantly increased the affinity of VEGF-E for both VEGF receptors. Crystal structure of the Orf virus NZ2 variant of vascular endothelial growth factor-E. Implications for receptor specificity.,Pieren M, Prota AE, Ruch C, Kostrewa D, Wagner A, Biedermann K, Winkler FK, Ballmer-Hofer K J Biol Chem. 2006 Jul 14;281(28):19578-87. Epub 2006 May 3. PMID:16672228 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Vascular Endothelial Growth Factor

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