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植物的光合器官通常含有叶绿素、类胡罗卜素和藻胆蛋白三类色素。藻胆蛋白主要包括藻红蛋白、藻蓝蛋白和变藻蓝蛋白。藻胆蛋白是水溶性的,这些蛋白质以共价键与发色团相连。R代表红藻纲,C代表蓝藻纲。 藻胆蛋白主要分布在蓝藻、红藻和隐藻中,是光合作用的辅助色素,当藻红蛋白吸收了光能后,将能量传递给藻蓝蛋白,然后经过变藻蓝蛋白传递给叶绿素a以进行光合作用。因而,藻胆蛋白是进行光合作用的主要光接受器。
Photosynthetic organs of plants usually contain chlorophyll, carotenoids and phycobiliproteins three kinds of pigment. Phycobiliproteins mainly include phycoerythrin, phycocyanin and cyanobacteria. Phycobiliproteins are water-soluble, and these proteins are covalently attached to the chromophore. R stands for Rhodophyceae, C stands for Cyanobacteria. Phycobiliproteins are mainly distributed in cyanobacteria, red algae and crypts algae, and are auxiliary pigments for photosynthesis. When phycoerythrin absorbs light energy, the phycobiliproteins transmit the energy to phycocyanin, which is then transmitted to chlorophyll a For photosynthesis. Thus, phycobiliproteins are the main photoreceptors for photosynthesis.