文章基本信息

标题：Replacement of riboflavin by an analogue in the blue-light photoreceptor of Phycomyces
本地全文：下载
作者：M. K. Otto ; M. Jayaram ; R. M. Hamilton 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1981
卷号：78
期号：1
页码：266-269
DOI：10.1073/pnas.78.1.266
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Under suitable conditions, roseoflavin [7-methyl-8-dimethylamino-10-(1'-D-ribityl)isoalloxazine] replaces riboflavin to about 80% in the photoreceptor of Phycomyces. The substitute-bearing photoreceptor functions with an efficiency of about 0.1% of that of the normal receptor. The substitution is proven by (i) a decrease of the effective light flux by a factor of 4.7, expressed as a corresponding increase in threshold, and (ii) an increase of the effectiveness of 529-nm light relative to 380-nm light. It has also been shown that roseoflavin is taken up by the mycelium, translocated to the sporangiophore, and effectively phosphorylated by the riboflavin kinase of Phycomyces.
关键词：roseoflavin ; photobiology