Only five major types of sensory photoreceptors (BLUF-proteins, cryptochromes, phototropins, phytochromes, and rhodopsins) are used in nature to regulate developmental processes, photosynthesis, photoorientation, and control of the circadian clock. Sensory photoreceptors of algae and protists are exceptionally rich in structure and function; light-gated ion channels and photoactivated adenylate cyclases are unique examples. During the past ten years major progress has been made with respect to understanding the function, photochemistry, and structure of key sensory players of the algal kingdom.

中文翻译：

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藻类感觉光感受器

自然界中仅使用五种主要类型的感觉光感受器（BLUF 蛋白、隐花色素、光敏素、光敏色素和视紫红质）来调节发育过程、光合作用、光定向和生物钟控制。藻类和原生生物的感觉光感受器结构和功能异常丰富；光门控离子通道和光活化腺苷酸环化酶是独特的例子。在过去的十年中，在理解藻类王国关键感官参与者的功能、光化学和结构方面取得了重大进展。