CP22 — Nicotiana attenuata

Summary

A4A49_26955 (CP22, also known as PSBS) in coyote tobacco (Nicotiana attenuata) encodes a chlorophyll a-b binding protein of the Chloroa_b-bind family. The product is associated with chlorophyll, xanthophyll, and phosphoprotein binding, as well as serine-type peptidase activity. It localizes to the photosystem II light-harvesting complex (LHCII), thylakoid membrane, and chloroplast thylakoid lumen. This gene is linked to the xanthophyll cycle, thylakoid membrane organization, responses to high light, red and blue light, and protein breakdown. Associations include photosynthetic rate, water use efficiency, quantum yield, chlorophyll content, photochemical quenching, and stomatal opening. It has been connected to photoprotection, photosystem II repair and supercomplex stability, electron transport rate, growth, reproductive output, herbivore resistance, and susceptibility to two-spotted spider mite. Related genes in other species are linked to non-photochemical quenching, heat and drought tolerance, and jasmonic acid production.