Host and Isotype: The antibody is derived from rabbit serum (IgG class) and is affinity-purified using phosphopeptide columns .
Immunogen: The antibody targets a synthesized peptide corresponding to the phosphorylation site of Ser142 within the 116–165 amino acid region of human THRB .
Molecular Weight: The antibody has a calculated molecular weight of 52,788 Da .
The antibody is validated for the following techniques:
Western Blot (WB): Detects phosphorylated THRB in lysates of cells treated with activating agents (e.g., PMA) . Recommended dilution: 1:500–1:2000 .
ELISA: Quantifies phosphorylated THRB in immunoassays using phosphopeptide competition . Dilution: 1:5000 .
Immunohistochemistry (IHC): Localizes phosphorylated THRB in paraffin-embedded tissues (e.g., lung cancer samples) .
Immunofluorescence (IF): Visualizes nuclear THRB phosphorylation in fixed cells .
Blocking Peptide: The antibody’s specificity is confirmed by competition assays using the phosphorylated immunogen peptide. For example, Western blot analysis of HeLa cells treated with PMA shows a strong signal that is abolished by pre-incubation with the phosphopeptide .
Cross-Reactivity: No cross-reactivity with non-phosphorylated THRB or unrelated proteins has been reported .
Phospho-THRB (S142) Antibody is a critical tool for investigating:
Thyroid Hormone Signaling: THRB phosphorylation at Ser142 may regulate its nuclear localization or transcriptional activity, though specific mechanisms remain under study .
Cancer Research: The antibody aids in analyzing THRB phosphorylation in cancer models, where altered receptor activity is linked to tumor progression .
Nuclear Receptor Regulation: The antibody facilitates studies on post-translational modifications (PTMs) of nuclear receptors, a key area in gene regulation and disease research .