SLC4A4 (Solute Carrier Family 4, Member 4): SLC4A4, part of the solute carrier family, is predominantly involved in the regulation of bicarbonate transport and acid-base balance within the body. It functions as an electrogenic sodium bicarbonate cotransporter, primarily expressed in the kidneys and pancreas, playing a critical role in renal bicarbonate reabsorption and pH regulation. Through its action, SLC4A4 facilitates the fine-tuning of bicarbonate secretion and reabsorption processes, essential for maintaining the body's overall acid-base homeostasis. Mutations in the SLC4A4 gene are associated with various renal tubular acidosis disorders, characterized by an inability to properly acidify the urine, leading to...