ArsA Arsenite Transporter， ATP-Binding， Homolog 1 （ASNA1） is a part of the arsA ATPase family. ASNA1 is the human homolog of the bacterial arsA gene. ArsA ATPase is the catalytic component of a multisubunit oxyanion pump In E.coli， which is in charge for resistance to arsenicals and antimonials. ASNA1 is also a main component of a transmembrane domain （TMD） recognition complex （TRC） which is involved in the post-translational delivery of tail-anchored （TA） proteins from the cytosol to the endoplasmic reticulum （ER）.
