PSI — Capsicum annuum

Summary

CaPSI (T459_12109) on pepper chromosome 4 encodes the Photosystem II CP47 reaction center protein, a chlorophyll-binding antenna protein of the PS_II_antenna-like superfamily. The gene is associated with photosynthetic electron transport in photosystem II, the photosynthetic electron transport chain, and nonphotochemical quenching, and its product localizes to the photosystem II complex and the chloroplast thylakoid membrane. CaPSI has also been linked to digestion and homeostasis processes, as well as to glucose content and photochemical quenching traits. Studies of related genes in other species connect the family to rubisco content and protein content, though these associations are not yet established in pepper.