Alpha-S-cysteinylthymine: a model for protein-nucleic acid cross-linking.
Crystals of alpha-S-cysteinylthymine, C8H12CIN3O4S, formula weight 281.72, are orthorhombic, space group P212121, with a=9.499 (1), b=24.072 (4), and c=5.012 (1) A, V=1146.1 (2) A3, and Z=4. The structure was determined by the direct method and refined by a full-matrix least-squares procedure to a final residual, R=0.043, using 1277 diffractometer data. From the structure, a three-dimensional model for the radiation-induced interaction of thymine residues and cysteine residues could be postulated.
D001665:Binding Sites; D003460:Crystallization; D003545:Cysteine; D004247:DNA; D046911:Macromolecular Substances; D009690:Nucleic Acid Conformation; D011485:Protein Binding; D011487:Protein Conformation; D011506:Proteins; D012313:RNA; D013941:Thymine; D014961:X-Ray Diffraction
D046911:Macromolecular Substances; D011506:Proteins; D012313:RNA; D004247:DNA; D003545:Cysteine; D013941:Thymine