2w6w

Crystal structure of recombinant Sperm Whale Myoglobin under 1atm of Xenon

spinqualitylabelsall models 2w6w, resolution 1.99Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2w6w is a 1 chain structure with sequence from Physeter catodon. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.99Å Ligands: GOL, HEM, SO4, XE Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function MYG_PHYMC Serves as a reserve supply of oxygen and facilitates the movement of oxygen within muscles. 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 Our aim is to shed light on the conservation of potential ligand docking sites that play an important role in ligand dynamics of globins by using the technique of filling with xenon atoms internal cavities, naturally present in hemoglobin and myoglobin. In particular, we present the high resolution structures of the Xe-adduct of deoxygenated wild type human hemoglobin and a quadruple mutant (L(B10)Y and H(E7)Q in alpha and beta chains). For the sake of comparison we also determined under the same experimental conditions the xenon complex of wild type sperm whale myoglobin.The analysis revealed that the number and position of Xe binding cavities is different in the alpha and beta subunits, the latter being more similar to myoglobin. Notably no proximal Xe docking site was detected in hemoglobin, at variance with myoglobin. The pattern of internal cavities accessibility and affinity for xenon suggests a different role for the dynamics of ligand migration in the two types of hemoglobin chains as compared to myoglobin. The number and position of hydrophobic cavities in hemoglobin is briefly discussed also in comparison with the data available for other members of the globin superfamily. (c) 2009 Wiley Periodicals, Inc. Biopolymers, 2009. Pattern of cavities in globins: The case of human hemoglobin.,Savino C, Miele AE, Draghi F, Johnson KA, Sciara G, Brunori M, Vallone B Biopolymers. 2009 Apr 13. PMID:19365817 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Myoglobin 3D structures

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