|Detection of Human and Mouse STAT1 p91 by Western Blot. Western blot shows lysates of Daudi human Burkitt's lymphoma cell line, HeLa human cervical epithelial carcinoma cell line, and NIH‑3T3 mouse embryonic fibroblast cell line. PVDF Membrane was probed with 1 µg/mL of Goat Anti-Human/Mouse STAT1 p91 Antigen Affinity-purified Polyclonal Antibody (Catalog # PAF-ST1) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF109). A specific band was detected for STAT1 p91 at approximately 91 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.|
|Immunoprecipitation of Human STAT1. STAT1 p91 was immunoprecipitated from 200 μg of cell lysate of HeLa human cervical epithelial carcinoma cell line following incubation with 3 µg Goat Anti-Human/Mouse STAT1 p91 Antigen Affinity-purified Polyclonal Antibody (Catalog # PAF-ST1) overnight at 4 °C. STAT1 p91-antibody complexes were absorbed using Protein G sepharose (Invitrogen, Catalog # 10-1242). Immunoprecipitated STAT1 p91 was detected by Western blot using 1 µg/mL Human STAT1 Monoclonal Antibody (Catalog # MAB14901). View our recommended buffer recipes for immunoprecipitation.|
STAT1 is associated with type I and II interferon signaling. Phosphorylation of STAT1 at Y701 leads to dimerization and translocation to the nucleus to activate gene transcription. Human STAT1 shows 93% and 94% aa identity with mouse and rat STAT1, respectively, over the region used as an immunogen. This region is identical between isoforms STAT1a (91 kDa) and STAT1b (84 kDa).
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