Maristentorin, a novel pigment from the positively phototactic marine ciliate Maristentor dinoferus, is structurally related to hypericin and stentorin.
Maristentorin, a novel pigment from the positively phototactic marine ciliate Maristentor dinoferus, is structurally related to hypericin and stentorin.
复制标题
Maristentorin 是一种来自正趋光性海洋纤毛虫 Maristentor dinoferus 的新型色素，其结构与金丝桃素和 stentorin 相关。
DOI：
10.1021/jp055871f
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Lobban,ChristopherS
中科院分区：
文献类型：
--
作者：
Mukherjee,Prasun;Fulton,DBruce;Halder,Mintu;Han,Xinxin;Armstrong,DanielW;Petrich,JacobW;Lobban,ChristopherS
The photoreceptor pigment of the heterotrich ciliate,Maristentordinoferus, has been characterized. It is structurally similar to those ofStentor coeruleusandBlepharisma japonicumbut differs significantly in that it bears no aromatic hydrogens. The structure of the pigment, maristentorin, is based upon the hypericin skeleton, and its spectra are nearly identical to those of hypericin but shifted toward the red. Within experimental error, its fluorescence lifetime is identical to that of hypericin, ∼5.5 ns in dimethylsulfoxide. It is remarkable that while the pigments are structurally similar inS. coeruleusandM. dinoferus, in the former there is an abrupt photophobic response, whereas in the latter there is a slow response toward light. The roles of the hypericin-like pigments in the heterotrich ciliates are discussed as potentially analogous inMaristentor.
