Background:

The family of ribosomal S6 kinases (Rsks), designated Rsk-1, Rsk-2 and Rsk-3, are important signaling intermediates that mediate responses to a broad range of ligand-activated receptor tyrosine kinases. It has been established that Rsk-3 is not activated by MAP kinase in vitro, unlike Rsk-1 and Rsk-2. A unique feature common to the three members of the Rsk family is that each possesses two non-identical complete kinase catalytic domains. The Rsk family amino-terminal kinase domain is phosphorylated on Ser 227 by 3-phosphoinositide-dependent protein kinase-1 (PDK1), which increases the kinase activity of Rsk. In the carboxy-terminal kinase domain, Rsk-1 and Rsk-2 are autophosphorylated on Ser 380 and Ser 386, respectively, which mediates the docking of PDK1 to Rsk in order to promote phosphorylation of substrates, such as histone H3.

Specificity:

RSK1 p90 (Phospho-S380) polyclonal antibody detects endogenous levels of RSK1 p90 protein only when phosphorylated at S380.

Alternative names:

S6K-alpha-1, p90-RSK 1, p90RSK1, p90S6K, MAPK-activated protein kinase 1a, MAPKAP kinase 1a, MAPKAPK-1a, RSK-1, RPS6KA1, 90 kDa ribosomal protein S6 kinase 1, dJ590P13.1 (ribosomal protein S6 kinase, 90kD, polypeptide 1, dJ590P13.1, EC 2.7.11.1, HU 1, HU1, KS6A1, MAP kinase activated protein kinase 1a, MAP kinase-activated protein kinase 1a, MAPK-activated protein kinase 1a, MAPKAP kinase 1a, MAPKAPK-1a, MAPKAPK1A, MGC79981, Mitogen-activated protein kinase-activated protein kinase 1A, OTTHUMP00000004113, p90 RSK1, p90-RSK 1, p90rsk, p90RSK1, p90S6K, pp90RSK1, Ribosomal protein S6 kinase 90kD 1, Ribosomal protein S6 kinase 90kD polypeptide 1, Ribosomal protein S6 kinase 90kDa polypeptide 1, Ribosomal protein S6 kinase alpha 1, Ribosomal protein S6 kinase alpha-1, Ribosomal protein S6 kinase polypeptide 1, Ribosomal S6 kinase 1, RPS6K1 alpha, rps6ka, Rps6ka1, RSK 1, RSK 1 p90, RSK, RSK-1, RSK1, S6K alpha 1, S6K-alpha-1,

Species reactivity:

Human, Mouse, Rat

Host:

Rabbit

Ig type:

Rabbit IgG, 1mg/ml in PBS with 0.02% sodium azide, 50% glycerol, pH7.2

Immunogen:

Synthetic phospho-peptide corresponding to residues surrounding Ser380 of human RSK1.

Purification & Purity:

ProA affinity purified

Molecular weight:

90 kDa

Applications:

WB ICC/IF IP

Usage:

WB:1:1,000-1:5,000 ICC:1:50-1:200

Storage:

Store at +4°C after thawing. Aliquot store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.

Precautions:

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

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