CAB — Nicotiana attenuata

Summary

A4A49_09113 (CAB, CAB8) in coyote tobacco (Nicotiana attenuata) encodes a chlorophyll a-b binding protein with dual-specificity protein kinase and MEKK activity, and is annotated to chlorophyll binding, metal binding, ATP binding, and mRNA binding. The gene is associated with photosynthesis, light harvesting in photosystem I, electron transport, pigmentation, photomorphogenesis, de-etiolation, stomatal closure, cell death, ethylene anabolism, sugar-mediated signalling, protein breakdown, and responses to low and high light intensity. It is linked to traits including chlorophyll content, seed longevity, leaf senescence, flowering time, root morphology, far-red light sensitivity, metabolite content, abiotic stress response, and plant growth and development. The protein localises to the photosystem I antenna complex, photosystem I reaction center, photosystem II, chloroplast thylakoid membrane, and chloroplast envelope. Studies of related genes in other species connect the family to leaf senescence, sugar response, and tissue-specific expression.