Na+/K+-ATPase alpha1 (phospho-S16) polyclonal antibody

P05023

The sodium/potassium ATPase is an integral membrane enzyme found in all cells of higher organisms and is responsible for the ATP dependent transport of sodium and potassium across the cell membrane. This membrane bound enzyme is related to a number of other ATPases including sarcoplasmic and endoplasmic reticulum calcium ATPase (SERCA) and plasma membrane calcium ATPase (PMCA). The sodium / potassium ATPase consists of a large, multipass, transmembrane catalytic subunit, termed the alpha subunit, and an associated smaller glycoprotein, termed the beta subunit. Studies indicate that there are three isoforms of the alpha subunit (alpha 1, alpha 2, alpha 3) and two isoforms of the beta subunit (beta 1 and beta 2) encoded by two multigene families.The different isoforms of the sodium / potassium ATPase exhibit tissue specific and developmental patterns of expression. The alpha 1 and beta mRNAs are present in all cell types examined, whereas the alpha 2 and alpha 3 mRNAs exhibit a more restricted pattern of cell specific expression. The alpha subunit has been found in kidney, brain, heart, and to a lesser extent liver, skeletal and smooth muscle.

The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen and the purity is > 95% (by SDS-PAGE).

p-Na+/K+-ATPase alpha1 (S16) pAb detects endogenous levels of Na+/K+-ATPase alpha1 protein only when phosphorylated at Ser16.

Immunohistochemistry (IHC) analyzes of p-Na+/K+-ATPase alpha1 (S16) pAb in paraffin-embedded human breast carcinoma tissue at 1:50.

For research use only, not for use in diagnostic procedure.

Synthetic phosphopeptide derived from human Na+/K+-ATPase alpha1 around the phosphorylation site of Serine 16.