E2F‑1 in Human Placenta. E2F‑1 was detected in immersion fixed paraffin-embedded sections of human placenta using 5 µg/mL Sheep Anti-Human E2F‑1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4825) overnight at 4 °C. Tissue was stained with the Anti-Sheep HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS019) and counterstained with hematoxylin (blue). View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.
Detection of Human E2F‑1 by Western Blot. Western blot shows lysates of HeLa human cervical epithelial carcinoma cell line and human skin tissue. PVDF membrane was probed with 1 µg/mL of Sheep Anti-Human E2F‑1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4825) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for E2F‑1 at approximately 60 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 8.
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
E2F-1 (adenovirus E2 gene promoter region binding factor 1; also retinoblastoma [RB]-binding protein 3/RBP3) is a 57 - 60 kDa nuclear member of the E2F/DP family of transcription factors. It has a dual function, mediating both cell proliferation and apoptosis in a context-dependent manner. Human E2F-1 is 437 amino acids (aa) in length. It contains a cyclin A: CDK2 binding site (aa 67 - 108), a DNA-binding region (aa 110 - 194), and an RB protein binding motif (aa 409 - 426) that, when engaged, inactivates E2F-1. There is one potential in-frame 23 aa substitution for aa 89 - 111. Over aa 264 - 437, human E2F-1 shows 89% and 80% aa identity to canine and mouse E2F-1, respectively.
E2F Transcription Factor 1
Entrez Gene IDs:
1869 (Human); 13555 (Mouse); 399489 (Rat)
E2F transcription factor 1; E2F1; E2F-1; PBR3; PRB-binding protein E2F-1; RBAP1; RBAP-1; RBBP3; RBBP-3; RBP3; Retinoblastoma-associated protein 1; Retinoblastoma-binding protein 3; transcription factor E2F1
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