1oyi

Solution structure of the Z-DNA binding domain of the vaccinia virus gene E3L

spinqualitylabelsall models 1oyi Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1oyi is a 1 chain structure with sequence from Vaccinia virus. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Solution NMR Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q86638_9POXV 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 The N-terminal domain of the vaccinia virus protein E3L (Z alpha(E3L)) is essential for full viral pathogenicity in mice. It has sequence similarity to the high-affinity human Z-DNA-binding domains Z alpha(ADAR1) and Z alpha(DLM1). Here, we report the solution structure of Z alpha(E3L) and the chemical shift map of its interaction surface with Z-DNA. The global structure and the Z-DNA interaction surface of Z alpha(E3L) are very similar to the high-affinity Z-DNA-binding domains Z alpha(ADAR1) and Z alpha(DLM1). However, the key Z-DNA contacting residue Y48 of Z alpha(E3L) adopts a different side chain conformation in unbound Z alpha(E3L), which requires rearrangement for binding to Z-DNA. This difference suggests a molecular basis for the significantly lower in vitro affinity of Z alpha(E3L) to Z-DNA compared with its homologues. The solution structure of the N-terminal domain of E3L shows a tyrosine conformation that may explain its reduced affinity to Z-DNA in vitro.,Kahmann JD, Wecking DA, Putter V, Lowenhaupt K, Kim YG, Schmieder P, Oschkinat H, Rich A, Schade M Proc Natl Acad Sci U S A. 2004 Mar 2;101(9):2712-7. Epub 2004 Feb 23. PMID:14981270 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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