7d5d

Left-handed G-quadruplex containing one bulge

spinqualitylabelsall models 7d5d, resolution 1.18Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7d5d is a 1 chain structure with sequence from Synthetic construct. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.18Å Ligands: K, SPM Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed G-quadruplex (G4) DNA structures with a left-handed backbone progression have unique and conserved structural features. Studies on sequence dependency of the structures revealed the prerequisites and some minimal motifs required for left-handed G4 formation. To extend the boundaries, we explore the adaptability of left-handed G4s towards the existence of bulges. Here we present two X-ray crystal structures and an NMR solution structure of left-handed G4s accommodating one, two and three bulges. Bulges in left-handed G4s show distinct characteristics as compared to those in right-handed G4s. The elucidation of intricate structural details will help in understanding the possible roles and limitations of these unique structures. Bulges in left-handed G-quadruplexes.,Das P, Ngo KH, Winnerdy FR, Maity A, Bakalar B, Mechulam Y, Schmitt E, Phan AT Nucleic Acids Res. 2021 Jan 27. pii: 6121459. doi: 10.1093/nar/gkaa1259. PMID:33503265 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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