Anabaena sp. sample can serve as a negative control, as under nitrogen deficient conditions phycobiliproteins are going to be lost. Overall sample quality is of crucial importance and in older or not properly stored samples, phycobiliproteins will undergo proteolytic degradation.
A large polypeptide Lcm containing a small amount of phycocyanin chromophore that acts as a terminal energy receptor and a linking polypeptide (PS2) between phycocyanin bodies and photosynthetic reaction centers.
For research use only, not for clinical use.