KC1 — Oryza sativa Japonica

Summary

OsKC1 (OS04G0117500) on rice chromosome 4 encodes a voltage-sensitive potassium channel belonging to the KAT/AKT family, with outward rectifier potassium channel activity, ion transporter activity, and additional annotated functions including ATPase inhibitor activity, calcium-dependent protein serine/threonine phosphatase activity, and SNARE-related roles. The gene is associated with potassium homeostasis and transport, reactive oxygen species responses, and regulation of stomatal opening. In rice, it has been linked to growth, grain and yield traits, salt and drought stress tolerance, osmotic stress tolerance, and seedling development. Associations also include leaf necrosis tolerance, alkali soil sensitivity, spikelet sterility, panicle length, and cadmium concentration. The protein localizes to the plasma membrane, pollen tube tip, cell plate, and vesicle compartments, and is connected to processes such as oxalate secretion, ion homeostasis, and cell plate formation.