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Related to phycobilin: anthocyanin, fucoxanthin


Any of a group of light-absorbing pigments that are usually covalently attached to proteins and are found in red algae and cyanobacteria.

[phyco- + Latin bīlis, bile (from the structural similarity of phycobilins to pigments in bile such as bilirubin) + -in.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Biochemistry) biology any of a class of red or blue-green pigments found in the red algae and cyanobacteria
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.phycobilin - water-soluble proteinaceous pigments found in red algae and cyanobacteria
pigment - dry coloring material (especially a powder to be mixed with a liquid to produce paint, etc.)
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For higher-magnification views of the diffusion of phycobilin fluorescence released from lysed algae during feeding, T.
may be explained by the higher amount of N-containing phycobilin pigments in Aphanizomenon sp.
It was discovered that the bioactive metabolites of Brevibacillus laterosporus, B117, had a statistically significant algicidal effect on cyanobacteria (Anabaena sp., Nostoc, Microcystis) that could also interfere with the normal operation of the photosynthetic component in the electron transport chain receptor binding domain, belonging to photosynthesis II; in addition, the bioactive metabolites degraded phycobilin and altered the organization structure of algal cells [27].
Cyanobacteria that do not produce chlorophyll b typically possess water-soluble phycobilin pigments.
This is what happens in the rhodophytes and cyanobacteria, which use the nitrogen of their phycobilin pigments for cell growth if there are no external sources of nitrogen compounds.