期刊文献+

太阳光及紫外线B诱发基因突变的碱基特异性 被引量:3

THE SPECIFICITY OF MUTATIONS INDUCED BY SUNLIGHT AND ULTRAVIOLET B
下载PDF
导出
摘要 目的:分析太阳光与紫外线B(UVB)诱发基因突变的碱基特异性。方法:照射处理M13mp2噬菌体,选择突变株,用dye-Primer法测定lacZα基因区域的DNA序列。结果:太阳光和UVB照射均可引起突变率的明显增高,太阳光照射诱发突变的大部分(约80%)是鸟嘌呤的颠换,而UVB照射则诱发以C→T转换为主的突变(约50%)。结论:太阳光照射诱发基因突变的作用不完全决定于其中的UVB组分,其他组分也可能发挥一定的作用。 Objective: To analyse the specificity of mutations induced by sunlight and ultraviolet B(UVB). Methods: M13mp2 phage was irradiated and mutants were selected, the DNA sequences inlacZ α region were determined with the dye-primer method. Results: Both sunlight and UVB caused anincrease in the mutation frequences significantly. Among the mutations induced by sunlight, about 80%were the transversion of guanine. For those induced by UVB, C-to-T transitions were predominant(about 50%). Conclusion: The mutagenic specificity of sunlight is determined not entirely hy UVBcomponent, but other components may also play some roles.
出处 《北京医科大学学报》 CSCD 1997年第2期121-123,共3页 Journal of Peking University(Health Sciences)
关键词 光刺激 紫外线 碱基序列 基因突变 Photic stimulation Ultraviolet rays Mutation Base sequence
  • 相关文献

同被引文献36

引证文献3

二级引证文献6

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部