UNIPROT #

O14983

PROTEIN NAME

ATP2A1

SYNONYMS

fast twitch skeletal muscle isoform antibody; AT2A1_HUMAN antibody; ATP2A antibody; ATP2A1 antibody; ATPase Ca++ transporting cardiac muscle fast twitch 1 antibody; ATPase Ca++ transporting fast twitch 1 antibody; ATPase, Ca(2+)-transporting fast twitch 1 antibody; Calcium pump 1 antibody; Calcium transporting ATPase sarcoplasmic reticulum type fast twitch skeletal muscle isoform antibody; Calcium-transporting ATPase sarcoplasmic reticulum type antibody; EC 3.6.3.8 antibody; Endoplasmic reticulum class 1/2 Ca(2+) ATPase antibody; Fast skeletal muscle SR calcium ATPase antibody; OTTHUMP00000162561 antibody; OTTHUMP00000162562 antibody; Sarcoendoplasmic reticulum calcium ATPase antibody; Sarcoplasmic reticulum Ca(2+)-ATPase 1 antibody; Sarcoplasmic/endoplasmic reticulum calcium ATPase 1 antibody; SERCA 1 antibody; SERCA1 antibody; SERCA1 truncated isoform, included antibody; SR Ca(2+) ATPase 1 antibody; SR Ca(2+)-ATPase 1 antibody

SEQUENCE SIMILARITIES

Belongs to the cation transport ATPase (P-type) (TC 3.A.3) family. Type IIA subfamily.

TISSUE SPECIFICITY

Skeletal muscle, fast twitch muscle (type II) fibers.

DEVELOPMENTAL STAGE

Isoform SERCA1A accounts for more than 99% of SERCA1 isoforms expressed in adult skeletal muscle, while isoform SERCA1B predominates in neo-natal skeletal muscle.

SUBCELLULAR LOCATION

Endoplasmic reticulum membrane. Sarcoplasmic reticulum membrane.

FUNCTION

Key regulator of striated muscle performance by acting as the major Ca2+ ATPase responsible for the reuptake of cytosolic Ca2+ into the sarcoplasmic reticulum. Catalyzes the hydrolysis of ATP coupled with the translocation of calcium from the cytosol to the sarcoplasmic reticulum lumen. Contributes to calcium sequestration involved in muscular excitation/contraction.