Name :
TRF1 Protein
Description :
Telomeric repeat binding factor 1 (TRF1), also known as TERF1, the shelterin complex, which modulates the telomere structures. TRF1 protein structure contains a C-terminal Myb motif, a dimerization domain near its N-terminus and an acidic N-terminus. Pin2/TRF1 was originally identified as a protein bound to telomeric DNA (TRF1) and as a protein involved in mitotic regulation (Pin2). Pin2/TRF1 negatively regulates telomere length and importantly, its function is tightly regulated during the cell cycle, acting as an important regulator of mitosis. TRF1 can be bound and modulated by two nucleolar GTP-binding proteins, nucleostemin (NS) and guanine nucleotide binding protein-like 3-like (GNL3L), which exhibit apparently opposite effects on the protein degradation of TRF1. TRF1/TERF1 may has associated with cancer. TRF1 may play a significant role in cell differentiation in non-small cell lung cancer (NSCLC). The expression level of TRF1 protein is significantly reduced in kidney cancer and the level is negatively correlated with malignant degree of the cancer. TRF1 expression in malignant gliomas cells, may play a role in the malignant progression of astroglial brain tumors.
Species :
Human
Uniprotkb :
Baculovirus-Insect Cells
Tag :
His
Synonyms :
TRF, telomeric repeat binding factor (NIMA-interacting) 1, hTRF1-AS, TRF1, t-TRF1, PIN2, FLJ41416, TRBF1
Construction :
A DNA sequence encoding the human TERF1 isoform 2 (NP_003209.2) (Met 1-Asp 419) was expressed, with a polyhistidine tag at the N-terminus.
Protein Purity :
> 80 % as determined by SDS-PAGE
Molecular Weight :
Approxiamtely 50.5 kDa
Endotoxin :
Formulatione :
Lyophilized from sterile 20mM Tris, 500mM NaCl, pH 8.0, 10% glyPlease contact us for any concerns or special requirements. Normally 5 % – 8 % trehalose, mannitol and 0. 01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.
Reconstitution :
A hardcopy of datasheet with reconstitution instructions is sent along with the products. Please refer to it for detailed information.
Stability & Storage :
Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃. Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Shipping :
In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Research Background :
Telomeric repeat binding factor 1 (TRF1), also known as TERF1, the shelterin complex, which modulates the telomere structures. TRF1 protein structure contains a C-terminal Myb motif, a dimerization domain near its N-terminus and an acidic N-terminus. Pin2/TRF1 was originally identified as a protein bound to telomeric DNA (TRF1) and as a protein involved in mitotic regulation (Pin2). Pin2/TRF1 negatively regulates telomere length and importantly, its function is tightly regulated during the cell cycle, acting as an important regulator of mitosis. TRF1 can be bound and modulated by two nucleolar GTP-binding proteins, nucleostemin (NS) and guanine nucleotide binding protein-like 3-like (GNL3L), which exhibit apparently opposite effects on the protein degradation of TRF1. TRF1/TERF1 may has associated with cancer. TRF1 may play a significant role in cell differentiation in non-small cell lung cancer (NSCLC). The expression level of TRF1 protein is significantly reduced in kidney cancer and the level is negatively correlated with malignant degree of the cancer. TRF1 expression in malignant gliomas cells, may play a role in the malignant progression of astroglial brain tumors.
References and Literature :
1. Tsai RY. (2009) Nucleolar modulation of TRF1: a dynamic way to regulate telomere and cell cycle by nucleostemin and GNL3L. Cell Cycle. 8(18):2912-6. 2. Chen YC,et al.(2009) Phosphorylation of telomeric repeat binding factor 1 (TRF1) by Akt causes telomere shortening. Cancer Invest. 27(1): 24-8. 3. Hu J,et al.(2006) Expression of telomeric repeat binding factor 1 in non-small cell lung cancer. J Surg Oncol. 93(1): 62-7. 4. La Torre D,et al.(2005) Expression of telomeric repeat binding factor-1 in astroglial brain tumors. Neurosurgery. 56(4): 802-10. 5. Shi JM,et al.(2004) Expression of telomere repeat binding factor 1 (TRF1) protein in kidney cancer. Zhejiang Da Xue Xue Bao Yi Xue Ban. 33(6): 496-9, 508. 6. Zhou XZ,et al.(2003) Role of Pin2/TRF1 in telomere maintenance and cell cycle control. J Cell Biochem. 89(1): 19-37.
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