3em2 | pdb_00003em2

A bimolecular anti-parallel-stranded Oxytricha nova telomeric quadruplex in complex with a 3,6-disubstituted acridine BSU-6038

spinqualitylabelsall models 3em2, resolution 2.30Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3em2 is a 2 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.3Å Ligands: K, NCE Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed A series of disubstituted acridine ligands have been cocrystallized with a bimolecular DNA G-quadruplex. The ligands have a range of cyclic amino end groups of varying size. The crystal structures show that the diagonal loop in this quadruplex results in a large cavity for these groups, in contrast to the steric constraints imposed by propeller loops in human telomeric quadruplexes. We conclude that the nature of the loop has a significant influence on ligand selectivity for particular quadruplex folds. Selectivity in Ligand Recognition of G-Quadruplex Loops (dagger).,Campbell NH, Patel M, Tofa AB, Ghosh R, Parkinson GN, Neidle S Biochemistry. 2009 Feb 4. PMID:19173611 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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