ATPB — Asparagus officinalis

Summary

AoATPB (ATPB) on asparagus chromosome 6 encodes the beta subunit of the F1 ATP synthase, a core component of the proton-transporting ATP synthase complex. The gene is associated with proton motive force-driven ATP synthesis, regulation of metabolism, brassinosteroid-mediated signalling, and upregulation of long-day photoperiodism and flowering. It has been linked to flowering time, plant growth and development, root morphology, stress response, meiosis, DNA methylation and demethylation, gene silencing, cell proliferation, and hydraulic conductivity. The encoded protein localises to the mitochondrial inner membrane, chloroplast thylakoid membrane, chloroplast envelope, apoplast, nucleolus, Golgi complex, and plant-type vacuole. Studies of related genes in other species connect the ATPB family to cytoplasmic male sterility, protein content, and cold and oxidative stress tolerance.