Ready-to-use ELISA kits are available for the detection of ATPase, H+ transporting, lysosomal V1 subunit E2, an alias of the protein, ATPase H+ transporting V1 subunit E2. The official gene symbol is ATP6V1E2. The protein has a mass of 26.1 kDa and length of 226 residues. It is a member of the V-ATPase E subunit family and may be known by other names, including: ATP6E1, vacuolar-type proton-translocating ATPase subunit E1, testis secretory sperm-binding protein Li 235P, V-ATPase subunit E 2, and V-type proton ATPase subunit E 2, and ATP6V1EL2.