1ddp

Solution structure of a CISPLATIN-INDUCED [CATAGCTATG]2 Interstrand cross-link

spinqualitylabelsall models 1ddp, 10 NMR models Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1ddp is a 2 chain structure. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CPT Resources: FirstGlance, OCA, RCSB, PDBsum Publication Abstract from PubMed The widely used antitumor drug cis-diamminedichloroplatinum(II) (cisplatin or cis-DDP) reacts with DNA, cross-linking two purine residues through the N7 atoms, which reside in the major groove in B-form DNA. The solution structure of the short duplex [d(CAT-AGCTATG)]2 cross-linked at the GC:GC site was determined by nuclear magnetic resonance (NMR). The deoxyguanosine-bridging cis-diammineplatinum(II) lies in the minor groove, and the complementary deoxycytidines are extrahelical. The double helix is locally reversed to a left-handed form, and the helix is unwound and bent toward the minor groove. These findings were independently confirmed by results from a phase-sensitive gel electrophoresis bending assay. The NMR structure differs markedly from previously proposed models but accounts for the chemical reactivity, the unwinding, and the bending of cis-DDP interstrand cross-linked DNA and may be important in the formation and repair of these cross-links in chromatin. Solution structure of a cisplatin-induced DNA interstrand cross-link.,Huang H, Zhu L, Reid BR, Drobny GP, Hopkins PB Science. 1995 Dec 15;270(5243):1842-5. PMID:8525382 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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