Enables enzyme binding activity. Involved in digestive tract development; regulation of intracellular pH; and spermatogenesis. Located in apical plasma membrane and basolateral plasma membrane. Biomarker of autosomal recessive polycystic kidney disease and prediabetes syndrome. Orthologous to human SLC4A2 (solute carrier family 4 member 2). [provided by Alliance of Genome Resources, Apr 2022]