Cell Signaling Technology Logo - Extra Large

Phospho-SRC-3 (Thr24) Antibody #2979

Filter:
  • WB
  • IF

    Product Specifications

    REACTIVITY H
    SENSITIVITY Endogenous
    MW (kDa) 160
    SOURCE Rabbit
    Application Key:
    • WB-Western Blotting 
    • IF-Immunofluorescence 
    Species Cross-Reactivity Key:
    • H-Human 

    Product Information

    Product Usage Information

    Application Dilution
    Western Blotting 1:1000
    Immunofluorescence (Immunocytochemistry) 1:200

    Storage

    Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at –20°C. Do not aliquot the antibody.

    Protocol

    Specificity / Sensitivity

    Phospho-SRC-3 (Thr24) Antibody detects endogenous levels of SRC-3 protein only when phosphorylated on Thr24. This antibody does not cross-react with other family members.

    Species Reactivity:

    Human

    Source / Purification

    Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to sequence surrounding Thr24 of the human SRC-3 protein. Antibodies are purified by protein A and peptide affinity chromatography.

    Background

    There are three members of the steroid receptor co-activator (SRC) family of proteins: SRC-1 (NCoA-1), SRC-2 (TIF2/GRIP1/NCoA-2), and SRC-3 (ACTR/pCIP/RAC3/TRAM-1/AIB1). All SRC family members share significant structural homology and function to stimulate transcription mediated by nuclear hormone receptors and other transcriptional activators such as Stat3, NF-κB, E2F1, and p53 (1-4). Two SRC proteins, SRC-1 and SRC-3, function as histone acetyltransferases (5,6). In addition, all three family members can recruit other histone acetyltransferases (CBP/p300, PCAF) and histone methyltransferases (PRMT1, CARM1) to target promoters and cooperate to enhance expression of many genes (5-8). The SRC proteins play important roles in multiple physiological processes including cell proliferation, cell survival, somatic cell growth, mammary gland development, female reproductive function, and vasoprotection (9). SRC-1 and SRC-3 are conduits for kinase-mediated growth factor signaling to the estrogen receptor and other transcriptional activators. Seven SRC-1 phosphorylation sites and six SRC-3 phosphorylation sites have been identified, which are induced by steroids, cytokines, and growth factors and involve multiple kinase signaling pathways (9-11). Research has shown that all three SRC family members are associated with increased activity of nuclear receptors in breast, prostate, and ovarian carcinomas. According to the literature, SRC-3 is frequently amplified or overexpressed in a number of cancers (12), and SRC-1/PAX3 and SRC-2/MYST3 translocations are found associated with rhabdomyosarcoma and acute myeloid leukemia, respectively (13,14).
    Phosphorylation of Thr24 of SRC-3 proteins can be induced by stimulation with EGF. Phosphorylated SRC-3 translocates from the cytoplasm to the nucleus where it interacts with other transcription factors and steroid hormone receptors and regulates gene expression (15).

    Alternate Names

    ACTR; AIB-1; AIB1; Amplified in breast cancer 1 protein; BHLHE42; CAGH16; CBP-interacting protein; Class E basic helix-loop-helix protein 42; CTG26; KAT13B; MGC141848; NCoA-3; NCOA3; Nuclear receptor coactivator 3; pCIP; RAC-3; RAC3; Receptor-associated coactivator 3; SRC-3; SRC3; Steroid receptor coactivator protein 3; Thyroid hormone receptor activator molecule 1; TNRC14; TNRC16; TRAM-1; TRAM1

    For Research Use Only. Not for Use in Diagnostic Procedures.
    Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
    All other trademarks are the property of their respective owners. Visit our Trademark Information page.