ntpN Sodium ATPase proteolipid component NTPK_ENTHR ntpK Involved in ATP-driven sodium extrusion. Na(+)-translocating ATPase subunit K MMDYLITQNGGMVFAVLAMATATIFSGIGSAKGVGMTGEAAAALTTSQPEKFGQALILQLLPGTQGLYGFVIAFLIFINLGSDMSVVQGLNFLGASLPIAFTGLFSGIAQGKVAAAGIQILAKKPEHATKGIIFAAMVETYAILGFVISFLLVLNA V-type sodium ATPase subunit K 156