Potassium inwardly rectifying channel subfamily J member 13 (KCNJ13)

KCNJ13 encodes the inwardly rectifying potassium channel protein Kir7.1 (potassium inwardly rectifying channel subfamily J member 13). As a membrane protein, Kir7.1 is primarily expressed in tissues such as the retinal pigment epithelium, small intestine, thyroid, kidney, and duodenum[1][2][10]. This ion channel regulates potassium ion flow across cellular membranes, contributing to the maintenance of membrane potential and overall cellular homeostasis. Mutations in KCNJ13 are causative of inherited retinal disorders, notably Leber congenital amaurosis 16 and snowflake vitreoretinal degeneration[1][10]. While it is considered a potential therapeutic target in the context of gene and cell therapies for vision loss, there are currently no approved drugs directly targeting this channel. KCNJ13 is a well-defined member of the inward rectifier potassium channel family, commonly referred to as Kir7.1, with broad importance in epithelial physiology and retinal health[1][2][6][7][10].

Other names

Kir7.1Kir1.4LCA16potassium channel inwardly-rectifying subfamily J member 13KIR1.4inward rectifier potassium channel 13KIR7.1

Blockade or modulation of potassium channel activity (investigational); restoration of channel function in loss-of-function mutations