Results 11 to 20 of about 16,097 (238)
Pyrimidine Dimers in the DNA of Paramecium aurelia
Biophysical Journal, 1968 The production and fate of thymine-containing pyrimidine dimers in Paramecium aurelia DNA was investigated in three experimental series: production of dimers by UV irradiation, fate of dimers in the dark, and "loss of photoreactivability of dimers." It is shown that cyclobutyl dimers are made by UV irradiation of Paramecium DNA in vivo, that because of
Sutherland, B.M. +2 more
openaire +3 more sources
4-Chloro-1H-pyrrolo[2,3-d]pyrimidine
Acta Crystallographica Section E, 2012 The title compound, C6H4ClN3, is essentially planar with the pyrrole and pyrimidine rings inclined to one another by 0.79 (15)°. In the crystal, molecules are connected via pairs of N—H...N hydrogen bonds, forming inversion ...
Su-Lan Dong, Xiaochun Cheng
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UV-Driven Self-Repair of Cyclobutane Pyrimidine Dimers in RNA
, 2023 Nucleic acids can be damaged by ultraviolet (UV) irradiation, forming structural photolesions such as cyclobutane-pyrimidine-dimers (CPD). In modern organisms, sophisticated enzymes repair CPD lesions in DNA, but to our knowledge, no RNA-specific enzymes
Corinna, Kufner +5 more
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6-Chloro-N4,N4-dimethylpyrimidine-2,4-diamine
Acta Crystallographica Section E, 2012 The asymmetric unit of the title compound, C6H9ClN4, contains four independent molecules (A, B, C and D). Their main difference is the torsion angles, ranging from 1.6 (5) to 5.9 (5)°, between the methyl group and the ...
Bin Sun +3 more
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Transcription-Coupled Repair in Plants
Frontiers in Plant Science, 2012 UV-induced pyrimidine dimers block the progression of both DNA and RNA polymerases. In order to reduce the disruptive effect of these lesions on gene expression, bacteria, yeasts, and animals preferentially repair the transcribed strand of actively ...
Ana Lena Fidantsef, Anne Bagg Britt
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Acta Crystallographica Section E: Crystallographic Communications, 2017 The title compounds, C16H15N5OS, (I), and C12H12FN5OS, (II), are [(diaminopyrimidine)sulfanyl]acetamide derivatives. In (I), the pyrimidine ring is inclined to the naphthalene ring system by 55.5 (1)°, while in (II), the pyrimidine ring is inclined to ...
S. Subasri +5 more
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Crystal structure of (2-methyl-4-phenyl-4H-benzo[4,5]thiazolo[3,2-a]pyrimidin-3-yl)(phenyl)methanone
Acta Crystallographica Section E: Crystallographic Communications, 2015 In the title compound, C24H18N2OS, the pyrimidine ring has a flat envelope conformation with the methine C atom as the flap. The attached phenyl and benzoyl rings are inclined to the mean plane of the pyrimidine ring by 84.87 (8) and 75.33 (9 ...
T. Sankar +3 more
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4-Methyl-6-(piperidin-1-yl)pyrimidin-2-amine
Acta Crystallographica Section E, 2013 The title compound, C10H16N4, crystalizes with two molecules (A and B) in the asymmetric unit in which the dihedral angles between the piperidine and pyrimidine rings are 47.5 (1) and 10.3 (1)°. The four C atoms of the pyrimidine ring in
S. Sreenivasa +5 more
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UV micro-irradiation of the Chinese hamster cell nucleus and caffeine post-treatment immunocytochemical localization of DNA photolesions in cells with partial and generalized chromosome shattering [PDF]
, 1983 UV micro-irradiation of a small part of the Chinese hamster nucleus and caffeine post-incubation often results in shattered chromosomes at the first post-irradiation mitosis.
Cornelis, Jan J. +8 more
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Methyl 2-[2-(benzyloxycarbonylamino)propan-2-yl]-5-hydroxy-6-methoxypyrimidine-4-carboxylate
Acta Crystallographica Section E, 2011 In the title compound, C18H21N3O6, a pyrimidine derivative, the dihedral angle between the benzene and pyrimidine rings is 52.26 (12)°.
Hoong-Kun Fun +4 more
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