5lfs

Lambda-[Ru(bpy)2(dppz)]2+ bound to brominated DNA

spinqualitylabelsall models 5lfs, resolution 1.85Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5lfs is a 2 chain structure with sequence from Synthetic construct. This structure supersedes the now removed PDB entry 4izr. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.85Å Ligands: 5BT, BA, CL, R1Z Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed X-ray crystal structures of three Lambda-[Ru(L)2 dppz]2+ complexes (dppz=dipyridophenazine; L=1,10-phenanthroline (phen), 2,2'-bipyridine (bpy)) bound to d((5BrC)GGC/GCCG) showed the compounds intercalated at a 5'-CG-3' step. The compounds bind through canted intercalation, with the binding angle determined by the guanine NH2 group, in contrast to symmetrical intercalation previously observed at 5'-TA-3' sites. This result suggests that canted intercalation is preferred at 5'-CG-3' sites even though the site itself is symmetrical, and we hypothesise that symmetrical intercalation in a 5'-CG-3' step could give rise to a longer luminescence lifetime than canted intercalation. Guanine Can Direct Binding Specificity of Ru-dipyridophenazine (dppz) Complexes to DNA through Steric Effects.,Hall JP, Gurung SP, Henle J, Poidl P, Andersson J, Lincoln P, Winter G, Sorensen T, Cardin DJ, Brazier JA, Cardin CJ Chemistry. 2017 Jan 19. doi: 10.1002/chem.201605508. PMID:28105682 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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