3d image of antheroxanthin skeletal formula

antheroxanthin xanthophyll cycle violaxanthin photosynthetic xanthophyll non-photochemical quenching violaxanthin zeaxanthin photosystem chlorophyll antenna thylakoid light harvesting complex nadph membrane metabolite metabolism biosynthesis mechanism pathway path biosynthetic intermediate biogenesis substrate precursor synthesis derivative bioprecursor metabolic enzyme endogenous herbal phytochemical phytotherapy plant herb natural herbalism pharmacognosy pharmacopoeia molecule molecular formula skeletal structural structure geometry 3d