3d image of phycocyanobilin skeletal formula

phycocyanobilin blue phycobilin tetrapyrrole chromophore cyanobacteria chloroplasts red algae glaucophytes cryptomonads phycobiliproteins allophycocyanin phycocyanin terminal acceptor energy thioether bond pcb blood pcb-hca photosynthetic pigment metabolite metabolism biosynthesis cycle mechanism pathway path catabolism biosynthetic intermediate biogenesis substrate precursor synthesis derivative bioprecursor metabolic enzyme endogenous herbal phytochemical phytotherapy plant herb natural herbalism pharmacognosy pharmacopoeia 3d