紫外线照射DNA中B型向C型转变的证据。一项红外线性二色性研究。

Evidence for B-C transition in ultraviolet-irradiated DNA. An infrared linear dichroism study.

作者信息

Fritzsche H, Lang H, Pohle W

出版信息

Biochim Biophys Acta. 1976 May 19;432(3):409-12. doi: 10.1016/0005-2787(76)90153-2.

Abstract

Oriented films of calf thymus DNA are studied before and after 254 nm ultraviolet irradiation by infrared linear dichroism. The ultraviolet-irradiated DNA films are changed in their conformation, which is indicated by a replacement of the B-A transition by a B-C transition when the humidity is lowered, from 90% to 75% relative humidity.

摘要

利用红外线性二色性对小牛胸腺DNA的取向膜在254nm紫外线照射前后进行了研究。紫外线照射后的DNA膜构象发生了变化，当湿度从90%相对湿度降低到75%相对湿度时，B-A转变被B-C转变所取代，这表明了这种变化。