Description
Product Usage Information
Western Blotting: 1:1000
Simple Western™: 1:10 - 1:50
Immunohistochemistry (Paraffin): 1:800 - 1:3200
Immunofluorescence (Immunocytochemistry): 1:200 - 1:400
Flow Cytometry (Fixed/Permeabilized): 1:50 - 1:200
Storage
Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at -20°C. Do not aliquot the antibody. For a carrier free (BSA and azide free) version of this product see product # 99402 .
Protocol
Available protocols: Western Blotting, Immunohistochemistry (Paraffin), Immunofluorescence (Immunocytochemistry), Flow Cytometry (Fixed/Permeabilized)
Specificity / Sensitivity
RSK2 (D21B2) Rabbit Monoclonal Antibody recognizes endogenous levels of total RSK2 protein. This antibody does not cross-react with other RSK isoforms.
Species Reactivity: Human, Mouse, Rat, Monkey, Bovine, Pig
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Pro686 of human RSK2 protein.
Background
The 90 kDa ribosomal S6 kinases (RSK1-4) are a family of widely expressed Ser/Thr kinases characterized by two nonidentical, functional kinase domains (1) and a carboxy-terminal docking site for extracellular signal-regulated kinases (ERKs) (2). Several sites both within and outside of the RSK kinase domain, including Ser380, Thr359, Ser363, and Thr573, are important for kinase activation (3). RSK1-3 are activated via coordinated phosphorylation by MAPKs, autophosphorylation, and phosphoinositide-3-OH kinase (PI3K) in response to many growth factors, polypeptide hormones, and neurotransmitters (3). Stimulation by various growth factors leads to activation of RSK2, which is a critical downstream effector kinase in several pathways. EGF stimulation leads to phosphorylation of CREB at Ser133 and phosphorylation of histone H3 by RSK2 (4,5). RSK2 phosphorylation of p53 may help regulate chromatin structure and cell cycle (6). RSK2 is prominently expressed in the brain and is essential for cognitive function and learning. During development, RSK2 regulates the differentiation of osteoblasts and skeletal muscle cells (7,8). Mutations in the corresponding gene are associated with Coffin-Lowry syndrome (CLS), an X-linked disorder characterized by mental retardation and the presence of characteristic facial anomalies (9).
Alternate Names
90 kDa ribosomal protein S6 kinase 3; CLS; epididymis secretory sperm binding protein; HU-3; Insulin-stimulated protein kinase 1; ISPK-1; ISPK1; KS6A3; MAP kinase-activated protein kinase 1b; MAPK-activated protein kinase 1b; MAPKAP kinase 1b; MAPKAPK-1b; MAPKAPK1B; mental retardation, X-linked 19; MRX19; p90-RSK 3; p90-RSK2; p90RSK3; pp90RSK2; ribosomal protein S6 kinase A3; Ribosomal protein S6 kinase alpha-3; ribosomal protein S6 kinase, 90kDa, polypeptide 3; Ribosomal S6 kinase 2; RPS6KA3; RSK; RSK-2; RSK2; S6K-alpha-3; S6K-alpha3
