TRF-1 Antibody

Western blot shows lysates of Jurkat human leukemic T cell line and Raji human Burkitt's lymphoma cell line. Gels were loaded with 30 µg of whole cell lysate (WCL), 20 µg of cytoplasmic (Cyto), and 10 µg of nuclear extracts (Nuc). PVDF membrane was probed with 1 µg/mL Sheep Anti-Human TRF-1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF5300) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF007). A specific band for TRF-1 was detected at approximately 60 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Product Discontinued

TRF-1 Antibody Summary

• Immunogen: E. coli-derived recombinant human TRF-1
  Lys136-Lys295
  Accession # P54274
• Specificity: Detects human TRF-1 in Western blots.
• Source: N/A
• Isotype: IgG
• Clonality: Polyclonal
• Host: Sheep
• Gene: TERF1
• Purity Statement: Antigen Affinity-purified

Applications/Dilutions

• Dilutions:
  • Western Blot 1 ug/mL

Packaging, Storage & Formulations

• 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.
• Buffer: Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
• Preservative: No Preservative
• Concentration: LYOPH
• Reconstitution Instructions: Reconstitute at 0.2 mg/mL in sterile PBS.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for TRF-1 Antibody

• NIMA-interacting protein 2
• PIN-2
• PIN2hTRF1-AS
• Telomeric protein Pin2/TRF1
• telomeric repeat binding factor (NIMA-interacting) 1
• telomeric repeat binding factor 1
• telomeric repeat binding protein 1
• telomeric repeat-binding factor 1
• TERF1
• TRBF1
• TRF1
• TRF-1
• TRF1FLJ41416
• TRFt-TRF1
• TTAGGG repeat-binding factor 1

Background

TRF-1 (telomeric repeat-binding factor 1; also Pin2) is a nuclear protein that participates in telomere homeostasis. Although its predicted molecular weight is 50 kDa, it runs anomalously at 60 kDa in SDS-PAGE. TRF-1 binds as a dimer to the ends of chromosomes (telomeres), where it blocks telomerase activity, promoting normal cell senescence and turnover. Human TRF-1 is 439 amino acids (aa) in length. It contains an N-terminal acidic region (aa 2‑64), a dimerization domain (aa 65‑265), an NLS (aa 337‑356), and a DNA binding HTH myb-type domain (aa 375‑432). Phosphorylation of TRF-1 at Ser435 mediates its binding to DNA. One alternate splice form shows a deletion of aa 295‑315 that may be accompanied by a 36 aa N-terminal extension. Over aa 136‑295, human TRF-1 shares 72% aa identity with mouse TRF-1.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Publications for TRF-1 Antibody (AF5300)(1)

Publication using AF5300

• B Silva, R Pentz, AM Figueira, R Arora, YW Lee, C Hodson, H Wischnewsk, AJ Deans, CM Azzalin FANCM limits ALT activity by restricting telomeric replication stress induced by deregulated BLM and R-loops Nat Commun, 2019-05-28;10(1):2253. 2019-05-28 [PMID: 31138795] (Western Blot, Human)

Bioinformatics

• Gene Symbol: TERF1
• Uniprot:
  • P54274()