CAB1 — Capsicum annuum

Summary

CaCAB1 (T459_05317) on pepper chromosome 2 encodes a chlorophyll a-b binding protein, a component of the light-harvesting complex localised to the chloroplast thylakoid membrane in both photosystem I and II. The gene product binds chlorophyll and nucleic acids, and is associated with photosynthesis, light harvesting, pigmentation, and response to light stimulus. It is associated with chlorophyll anabolism and breakdown, phenylpropanoid and flavonoid anabolism, and virus-induced post-transcriptional gene silencing. Associations with fruit color, chlorophyll content, quantum yield, net photosynthetic rate, and photosynthetic rate have been noted. Studies of related genes in other species link the family to additional light-harvesting complex proteins such as CAB7, CABC, CABE, and LHCP.