1vtt

GT Wobble Base-Pairing in Z-DNA at 1.0 Angstrom Atomic Resolution: The Crystal Structure of d(CGCGTG)

spinqualitylabelsall models 1vtt, resolution 1.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1vtt 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 1Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed The DNA oligomer d(CGCGTG) crystallizes as a Z-DNA double helix containing two guanine-thymine base pair mismatches of the wobble type. The crystal diffracts to 1 A resolution and the structure has been solved and refined. At this resolution, a large amount of information is revealed about the organization of the water molecules in the lattice generally and more specifically around the wobble base pairs. By comparing this structure with the analogous high resolution structure of d(CGCGCG) we can visualize the structural changes as well as the reorganization of the solvent molecules associated with wobble base pairing. There is only a small distortion of the Z-DNA backbone resulting from introduction of the GT mismatched base pairs. The water molecules cluster around the wobble base pair taking up all of the hydrogen bonding capabilities of the bases due to wobble pairing. These bridging water molecules serve to stabilize the base-base interaction and, thus, may be generally important for base mispairing either in DNA or in RNA molecules. G.T wobble base-pairing in Z-DNA at 1.0 A atomic resolution: the crystal structure of d(CGCGTG).,Ho PS, Frederick CA, Quigley GJ, van der Marel GA, van Boom JH, Wang AH, Rich A EMBO J. 1985 Dec 16;4(13A):3617-23. PMID:4092690 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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