phycocyanin

The special molecule that provides the blue color in blue-green algae is called phycocyanin.

The frond's reddish-black colour results from the red pigments phycoerythrin and phycocyanin.

In red light, this is replaced by blue colored phycocyanin, which absorbs red light better.

Cyanobacteria get their colour from the bluish pigment phycocyanin, which they use to capture light for photosynthesis.

The apoprotein with its chromophore is called phycocyanin, phycoerythrin, and allophycocyanin, respectively.

There are phycocyanin and phycoerythrin subunits that radiate out from this center like thin tubes.

In some species of cyanobacteria, when both phycocyanin and phycoerythrin is present, the phycobilisome can undergo significant restructuring as response to light color.

Phycocyanin has antioxidant and anti-inflammatory effects.

Phycocyanin is a pigment-protein complex from the light-harvesting phycobiliprotein family, along with allophycocyanin and phycoerythrin.

In green light, the cells accumulate more phycoerythrin, whereas in red light they produce more phycocyanin.

The four commonly recognized phycobilins are phycocyanin, allophycocyanin, allophycocyanin B and phycoerythrin.

Phycocyanobilin is present only in the phycobiliproteins allophycocyanin and phycocyanin, of which it is the terminal acceptor of energy.

Phycoerythrocyanin is similar to phycocyanin, an important component of the light-harvesting complex (phycobilisome) of cyanobacteria and red algae.

Depending on the algae source, the amount of phycocyanin can amount to up to 15% of the dry weight of the algae.

The globin fold is found in its namesake proteins hemoglobin and myoglobin as well as in phycocyanin proteins.

In some Rhodophytes and oceanic cyanobacteria, phycoerythrobilin is also present in the phycocyanin, then termed R-Phycocyanin.

Examples of bilins are found in animals, and phycocyanobilin, the chromophore of the photosynthetic pigment phycocyanin in algae and plants.

Romay C, Ledon N, Gonzalez R. Further studies on anti-inflammatory activity of phycocyanin in some animal models of inflammation.

AFA is also a source of phycocyanin (PC), a photosynthetic pigment with antioxidant and anti-inflammatory properties that contributes the 'blue' to blue-green algae.

The light energy is captured by phycoerythrin and is then passed on to the reaction centre chlorophyll pair, most of the time via the phycobiliproteins phycocyanin and allophycocyanin.

Each phycobilisome consists of a core made of allophycocyanin, from which several outwardly oriented rods made of stacked disks of phycocyanin and (if present) phycoerythrin(s) or phycoerythrocyanin.

One study evaluated the ability of a novel natural extract of AFA enriched with phycocyanin to protect normal human erythrocytes and blood plasma samples against oxidative damage in vitro.

In contrast the colonies that live in shaded areas have more phycoerythrin (pigment that absorbs green) in comparison to phycocyanin (pigment that absorbs red), thinner, and are purple.

Allophycocyanin absorbs and emits at longer wavelengths than phycocyanin C or phycocyanin R. Phycocyanins are found in Cyanobacteria (previously called blue-green algae).

While only phycocyanobilin is covalently bound to phycocyanin, leading to an absorption maximum around 620 nm, phycoerythrocyanin containing both phycoviolobilin and phycocyanobilin leads to an absorption maximum around 575 nm.