All PBS have the chromoproteins (phycobiliproteins) allophycocyanin (AP) and phycocyanin (PC).
First-pass extracted concept
phycocyanin
Candidate: toolkit item1 source documents4 linked claims
Live refresh every 5sNext refresh in 5s
Aliases
PC
Evidence Snippets
Supporting Sources
Linked Claims
Maximum phycoerythrin synthesis and minimum phycocyanin synthesis occur after 550 nm green light exposure, whereas maximum phycocyanin synthesis and minimum phycoerythrin synthesis occur after 640 nm red light exposure.
Quoted textsource-backed
Maximum PE synthesis and minimum PC synthesis occurred following exposure to 550 nm GL, and maximal PC synthesis and minimal PE synthesis occurred following exposure to 640 nm RL.
Complementary chromatic adaptation reflects altered phycobilisome pigment-protein composition in response to environmental light quality.
Quoted textsource-backed
This light control of pigmentation was termed complementary chromatic adaptation (CCA). Bennett and Bogorad showed that CCA was the result of altered PBS pigment-protein composition.
In Fremyella diplosiphon, red light favors phycocyanin-rich phycobilisomes whereas green light favors phycoerythrin-rich phycobilisomes, enabling efficient absorption of prevalent wavelengths.
Quoted textsource-backed
In red light the organism has almost no PE... If the Cyanobacterium is moved to green light, new PBS are synthesized with rods having single PC hexamers and up to three PE hexamers... because PC absorbs RL (λmax = 620 nm) and PE absorbs GL (λmax = 560 nm), these changes facilitate efficient absorption of prevalent wavelengths of light in the environment.
Photocontrol of phycoerythrin and inducible phycocyanin levels is primarily mediated by transcriptional regulation of the cpeBA and cpcB2A2 operons.
Quoted textsource-backed
Photocontrol of PE and PCi levels is primarily a consequence of transcriptional regulation of cpeBA and cpcB2A2 operons.