| 单词 |
phycobilin |
| 释义 |
phycobilin Bot.|faɪkəʊˈbaɪlɪn|
[a. G. phycobilin (R. Lemberg 1929, in Naturwissenschaften XVII. 541/2): see phyco- and bilin.]
a. Any of a group of compounds that are present in some algæ as prosthetic groups of chromoproteins such as phycocyanin and phycoerythrin.
b. Also phycobilin pigment. Any of these chromoproteins.
1945E. I. Rabinowitch Photosynthesis I. xv. 417 The separation of the chromophoric groups from the carrier protein was achieved by Lemberg (1929), who introduced the name ‘phycobilins’ because of the similarity between these chromophores and the bile pigments. 1950Jrnl. Gen. Physiol. XXXIII. 418 Light absorbed by the phycobilin pigments (phycoerythrin and phycocyanin) is utilized with good efficiency. 1962C. Ó hEocha in R. A. Lewin Physiol. & Biochem. of Algae xxv. 421 Photo⁓synthetically active red and blue biliproteins, called phycoerythrins and phycocyanins, respectively, have been isolated only from algae. Their prosthetic groups or chromophores are tetrapyrroles known as phycobilins. Unlike the chlorophylls, phycobilins are not readily released from associated proteins. 1965Bell & Coombe tr. Strasburger's Textbk. Bot. 466 Rhodophyceae, red algae... Chlorophyll and the associated carotinoids..are masked by a red, strongly fluorescent, water-soluble pigment, phycoerythrin (a phycobilin..with absorption⁓bands differing from those in the Cyanophyceae). 1971Nature 26 Nov. 232/1 One of the first obvious effects of nitrogen starvation in blue-green algae is the disappearance of phycobilin pigments, which normally constitute about 15% of the dry weight. |
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