Thus, the presence of D-glucose caused a reduction of pigment content in the cell, due to the inhibition of chlorophyll a and phycocyanobilin
biosynthesis at the stage of the transformation of their universal precursor.
We have previously demonstrated that phycocyanobilin
, a natural tetrapyrrolic compound similar to bilirubin, can attenuate the levels of mitochondrial superoxide and consequently shift the glutathione redox buffer towards reduction .
Oxygen radical absorbance capacity of phycocyanin and phycocyanobilin from the food supplement Aphanizomenon flos-aquae.
Scavenging of peroxynitrite by phycocyanin and phycocyanobilin from Spirulina platensis: protection against oxidative damage to DNA.
Hirata T, Tanaka M, Ooike M, Tsunomura T, Sakaguchi M (1999) Antioxidant activities of phycocyanobilin
prepared from Spirulina platensis.
This protein contains a tetrapyrrole phycocyanobilin
, which is responsible for antioxidant properties of Pc .