Background:

The phosphorylation and dephosphorylation of proteins on serine and threonine residues is an essential means of regulating a broad range of cellular functions in eukaryotes, including cell division, homeostasis and apoptosis. A group of proteins that are intimately involved in this process are the serine/ threonine (Ser/Thr) protein kinases. The salt-inducible kinases (SIKs) are a family of related serine-threonine kinases and are key enzymes that modulate important processes such as steroid hormone biosynthesis and Insulin signaling in adipocytes. QSK, also known as L19 or SIK3 (salt-inducible kinase 3), is a 1,263 amino acid cytoplasmic protein belonging to the protein kinase superfamily, CAMK Ser/Thr protein kinase family and the AMPK subfamily. Ubiquitously expressed, QSK consists of one protein kinase domain and a UBA domain. QSK is activated by 14-3-3 ζ and utilizes magnesium as a cofactor. QSK exists as three alternatively spliced isoforms.

Specificity:

QSK polyclonal antibody detects endogenous levels of QSK protein.

Alternative names:

Serine/threonine-protein kinase SIK3; Salt-inducible kinase 3; SIK-3; Serine/threonine-protein kinase QSK; SIK3; KIAA0999; QSK; L19

Species reactivity:

Human,Rat,Mouse

Host:

Rabbit

Ig type:

Rabbit IgG, 1mg/ml in PBS with 0.02% sodium azide, 50% glycerol, pH7.4.

Immunogen:

Synthetic peptide, corresponding to Human QSK.

Purification & Purity:

The protein was purified from E.coli and the purity is > 95% (by SDS-PAGE).

Molecular weight:

~ 140 kDa

Applications:

WB IHC

Usage:

WB: 1:500~1000

Storage:

Store at 4°C short term. Aliquot and store at -25°C long term. Avoid freeze-thaw cycles.

Precautions:

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

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