TRF-2 Antibody (JE37-57)
Novus Biologicals, part of Bio-Techne | Catalog # NBP3-33049
Recombinant Monoclonal Antibody
Key Product Details
Species Reactivity
Human
Applications
Immunocytochemistry/ Immunofluorescence, Immunohistochemistry, Immunohistochemistry-Paraffin, Western Blot
Label
Unconjugated
Antibody Source
Recombinant Monoclonal Rabbit IgG Clone # JE37-57
Concentration
1 mg/ml
Product Specifications
Immunogen
Recombinant protein within Human TRF-2 aa 1-100 / 542. (Uniprot: Q15554)
Localization
Nucleus, Chromosome, telomere.
Clonality
Monoclonal
Host
Rabbit
Isotype
IgG
Theoretical MW
60 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
Scientific Data Images for TRF-2 Antibody (JE37-57)
Western Blot: TRF-2 Antibody (JE37-57) [NBP3-33049]
Western Blot: TRF-2 Antibody (JE37-57) [NBP3-33049] - Western blot analysis of TRF-2 on different lysates with Rabbit anti-TRF-2 antibody (NBP3-33049) at 1/500 dilution.Lane 1: SiHa cell lysate
Lane 2: Jurkat cell lysate
Lysates/proteins at 10 ug/Lane.
Predicted band size: 60 kDa
Observed band size: 60 kDa
Exposure time: 2 minutes;
10% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (NBP3-33049) at 1/500 dilution was used in 5% NFDM/TBST at room temperature for 2 hours. Goat Anti-Rabbit IgG - HRP Secondary Antibody at 1:200,000 dilution was used for 1 hour at room temperature.
Immunohistochemistry: TRF-2 Antibody (JE37-57) [NBP3-33049]
Immunohistochemistry: TRF-2 Antibody (JE37-57) [NBP3-33049] - Immunohistochemical analysis of paraffin-embedded human colon carcinoma tissue with Rabbit anti-TRF-2 antibody (NBP3-33049) at 1/1,000 dilution.The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH 6.0) for 2 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (NBP3-33049) at 1/1,000 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
Immunocytochemistry/ Immunofluorescence: TRF-2 Antibody (JE37-57) [NBP3-33049]
Immunocytochemistry/ Immunofluorescence: TRF-2 Antibody (JE37-57) [NBP3-33049] - Immunocytochemistry analysis of SiHa cells labeling TRF-2 with Rabbit anti-TRF-2 antibody (NBP3-33049) at 20ug/mL dilution.Cells were fixed in 4% paraformaldehyde for 10 minutes at 37 ℃, permeabilized with 0.05% Triton X-100 in PBS for 20 minutes, and then blocked with 2% negative goat serum for 30 minutes at room temperature. Cells were then incubated with Rabbit anti-TRF-2 antibody (NBP3-33049) at 20ug/mL dilution in 2% negative goat serum overnight at 4 ℃. Goat Anti-Rabbit IgG H&L (iFluor™ 488) was used as the secondary antibody at 1/1,000 dilution. PBS instead of the primary antibody was used as the secondary antibody only control. Nuclear DNA was labelled in blue with DAPI.
Applications for TRF-2 Antibody (JE37-57)
Application
Recommended Usage
Immunocytochemistry/ Immunofluorescence
20ug/mL
Immunohistochemistry-Paraffin
1:200-1:1000
Western Blot
1:1000
Formulation, Preparation, and Storage
Purification
Protein A purified
Formulation
1*TBS (pH7.4), 0.05% BSA and 40% Glycerol
Preservative
0.05% Sodium Azide
Concentration
1 mg/ml
Shipping
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.
Background: TRF-2
Both TRF2 and TRF1 bind to telomeric double stranded 5'-TTAGGG-3' DNA repeats, then recruit RAP1, TIN2, TPP1, and POT1 for the assembly of the shelterin complex. The telomeric association of TRF2 is greatly increased in the S phase of the cell cycle (2). Loss of TRF2 leads to telomere shortening, the DNA damage response, chromosomal instability, and replicative senescence. Interestingly, the contribution of TRF2 to telomere shortening via a telomerase-independent mechanism has also been reported (3). In conjunction with the exonuclease, Apollo, TRF2 protects telomeres during replication and negatively regulates the accumulation of DNA topoisomerase (TOP1, TOP2A and TOP2B).
TRF2 has been implicated in cancer, shown to be a major oncogene in telomerase-deficient mice. A link to Werner syndrome, a premature aging disease caused by the loss of WRN, has been reported based on TRF2 recruitment of WRN for processing of telomeric DNA (4). TRF2 expression is increased during human embryonic stem cell differentiation and has been shown to interact with Repressor Element-1 Silencing Transcription Factor (REST), protecting it from proteasomal degradation (5).
References
1. Grammatikakis, I., Zhang, P., Mattson, M. P., & Gorospe, M. (2016). The long and the short of TRF2 in neurogenesis. Cell cycle (Georgetown, Tex.), 15(22), 3026-3032. PMID: 27565210
2. Li, F., Kim, H., Ji, Z., Zhang, T., Chen, B., Ge, Y., Hu, Y., Feng, X., Han, X., Xu, H., Zhang, Y., Yu, H., Liu, D., Ma, W., & Songyang, Z. (2018). The BUB3-BUB1 Complex Promotes Telomere DNA Replication. Molecular cell, 70(3), 395-407. PMID: 29727616
3. Ancelin, K., Brunori, M., Bauwens, S., Koering, C. E., Brun, C., Ricoul, M., Pommier, J. P., Sabatier, L., & Gilson, E. (2002). Targeting assay to study the cis functions of human telomeric proteins: evidence for inhibition of telomerase by TRF1 and for activation of telomere degradation by TRF2. Molecular and cellular biology, 22(10), 3474-3487. PMID: 11971978
4. Machwe A, Xiao L, & Orren DK. (2004) TRF2 recruits the Werner syndrome (WRN) exonuclease for processing of telomeric DNA. Oncogene. 23(1):149-56. PMID: 14712220.
5. Diotti, R., & Loayza, D. (2011). Shelterin complex and associated factors at human telomeres. Nucleus (Austin, Tex.), 2(2), 119-135. PMID: 21738835
Long Name
Telomeric Repeat Binding Factor 2
Alternate Names
TERF2, TRBF2, TRF2
Gene Symbol
TERF2
Additional TRF-2 Products
Product Documents for TRF-2 Antibody (JE37-57)
Product Specific Notices for TRF-2 Antibody (JE37-57)
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.
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