3x34

Crystal structure of the reduced form of the solubilized domain of porcine cytochrome b5 in form 1 crystal

spinqualitylabelsall models 3x34, resolution 0.76Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3x34 is a 1 chain structure with sequence from Sus scrofa. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 0.76Å Ligands: CA, HEM Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function CYB5_PIG Cytochrome b5 is a membrane bound hemoprotein which function as an electron carrier for several membrane bound oxygenases. Publication Abstract from PubMed Mammalian microsomal cytochrome b5 has multiple electron-transfer partners that function in various electron-transfer reactions. Four crystal structures of the solubilized haem-binding domain of cytochrome b5 from porcine liver were determined at sub-angstrom resolution (0.76-0.95 A) in two crystal forms for both the oxidized and reduced states. The high-resolution structures clearly displayed the electron density of H atoms in some amino-acid residues. Unrestrained refinement of bond lengths revealed that the protonation states of the haem propionate group may be involved in regulation of the haem redox properties. The haem Fe coordination geometry did not show significant differences between the oxidized and reduced structures. However, structural differences between the oxidized and reduced states were observed in the hydrogen-bond network around the axial ligand His68. The hydrogen-bond network could be involved in regulating the redox states of the haem group. High-resolution crystal structures of the solubilized domain of porcine cytochrome b5.,Hirano Y, Kimura S, Tamada T Acta Crystallogr D Biol Crystallogr. 2015 Jul;71(Pt 7):1572-81. doi:, 10.1107/S1399004715009438. Epub 2015 Jun 30. PMID:26143928 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Cytochrome b5 3D structures

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