The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Application notesIP: 1/50.
WB: 1/200,000 - 1/500,000. Detects a band of approximately 11 kDa (predicted molecular weight: 6 kDa).
Is unsuitable for IHC-P.
Not yet tested in other applications.
Optimal dilutions/concentrations should be determined by the end user.
FunctionReversibly inhibits the activity of ATP2A2 in cardiac sarcoplasmic reticulum by decreasing the apparent affinity of the ATPase for Ca(2+). Modulates the contractility of the heart muscle in response to physiological stimuli via its effects on ATP2A2. Modulates calcium re-uptake during muscle relaxation and plays an important role in calcium homeostasis in the heart muscle. The degree of ATP2A2 inhibition depends on the oligomeric state of PLN. ATP2A2 inhibition is alleviated by PLN phosphorylation.
Tissue specificityHeart muscle (at protein level).
Involvement in diseaseCardiomyopathy, dilated 1P Cardiomyopathy, familial hypertrophic 18
Sequence similaritiesBelongs to the phospholamban family.
Post-translational modificationsPhosphorylation by PKA abolishes the inhibition of ATP2A2-mediated calcium uptake. Phosphorylated at Thr-17 by CaMK2, and in response to beta-adrenergic stimulation. Phosphorylation by DMPK may stimulate sarcoplasmic reticulum calcium uptake in cardiomyocytes.
Cellular localizationEndoplasmic reticulum membrane. Sarcoplasmic reticulum membrane. Mitochondrion membrane. Membrane. Colocalizes with HAX1 at the endoplasmic reticulum (PubMed:17241641). Colocalizes with DMPK a the sarcoplasmic reticulum (PubMed:15598648).