ATP1B3 (ATPase Na+/K+ Transporting Subunit Beta 3): ATP1B3 is part of the Na+/K+ ATPase pump, which is essential for maintaining cellular ion gradients, a critical process for cell volume regulation and electrical excitability. This subunit helps regulate the pump's activity and specificity, contributing to its role in muscle function, nerve transmission, and kidney filtration. Dysregulation or mutations in ATP1B3 have potential implications for cardiovascular diseases and neurological disorders....