KC1 — Oryza sativa Japonica

Summary

Rice gene OS01G0210700 (KC1, also known as KAT2) encodes a protein belonging to the KAT/AKT family, with domains including KHA_dom, Ion_trans_dom, and cNMP-bd_dom, and is annotated with outward rectifier potassium channel activity, ion transporter activity, ATPase inhibitor activity, and calcium-dependent protein serine/threonine phosphatase activity. The gene is associated with regulation of potassium transport, stomatal opening, membrane potential, and ion homeostasis. In rice, KC1 is linked to growth, grain yield and shape, salt and drought stress tolerance, osmotic stress tolerance, reactive oxygen species responses, and stomatal function. It is also associated with leaf necrosis tolerance, alkali soil sensitivity, spikelet sterility, cadmium concentration, and yield traits. The protein localizes to the plasma membrane, nuclear membrane, cell plate, and vesicle compartments. Studies of related genes in other species connect the family to guard cell ion flux, seed germination, sodium and cadmium tolerance, and root gravitropism.