Non-Watson-Crick G.C and A.T base pairs in a DNA-antibiotic complex.

Non-Watson-Crick G.C and A.T base pairs in a DNA-antibiotic complex.
复制标题

DNA-抗生素复合物中的非 Watson-Crick G.C 和 A.T 碱基对。

DOI:
10.1126/science.3704650
复制
发表时间:
1986
期刊:
影响因子:
56.9
通讯作者:
Alexander Rich
Alexander Rich
中科院分区:
综合性期刊1区
文献类型:
--
作者:
G. Quigley;G. Ughetto;G. A. Marel;J. H. Boom;Andrew H.‐J. Wang;Alexander Rich

文献摘要

被引文献

相似文献

与双嵌入剂抗生素 triostin A 共结晶的 DNA 八聚体 d(GCGTACGC) 的结构已得到解决。 DNA 形成未缠绕的右手双螺旋。四个碱基对是 Watson-Crick 型,四个是 Hoogsteen 碱基对,包括两个 A.T 和两个 G.C 碱基对。这是在 Hoogsteen G.C 碱基对的寡核苷酸中首次观察到胞嘧啶被质子化。这些也可能出现在与这种抗生素复合的 DNA 溶液中。
The structure of a DNA octamer d(GCGTACGC) cocrystallized with the bisintercalator antibiotic triostin A has been solved. The DNA forms an unwound right-handed double helix. Four base pairs are of the Watson-Crick type while four are Hoogsteen base pairs, including two A.T and two G.C base pairs. This is the first observation in an oligonucleotide of Hoogsteen G.C base pairs where the cystosine is protonated. It is likely that these also occur in solutions of DNA complexed to this antibiotic.