General descriptionTelomerase play a critical role in regulating proliferation and senescence in normal somatic cells as well as most cancer cells. In humans, the telomerase reverse transcriptase (hTERT) is a lowly expressed protein with only several hundred molecules per cell. The low expression has made it difficult to detect, purify and study TERT activity from the endogenous loci.
To facilitate reliable detection of the endogenous TERT protein, a FLAG-SNAP tag was fused to the N-terminus of the TERT locus in HeLa cells. The FLAG-SNAP tag does not impair the function of the endogenous hTERT protein. Efficient immunopurification (IP) of the active telomerase ribonucleoprotein complexes may be accomplished by using the well-characterized FLAG antibody. The SNAP tag may be used to visualize subcellular localization of the low abundant endogenous TERT protein.
Reference:
Xi L, Schmidt JC, Zaug AJ, Ascarrunz DR, and Cech TR (2016) A novel two-step genome editing strategy with CRISPR-Cas9 provides new insights into telomerase action and TERT gene expression. Genome Biology 16: 231-248.
ApplicationResearch Category
Cell Culture
Subject to local law, this product is intended to be sold for internal in vitro research use only subject to terms and conditions found here: www.sigmaaldrich.com/restrictedcelluse. This product may not be: re-engineered or copied; used to make derivatives, modifications or functional equivalents; used to obtain patents or other IP claiming use of the product; used to develop, test, or manufacturer a commercial product; used as a component in a commercial product; resold or licensed; used in any clinical applications or trials; or used in humans. A license or limited commercial use agreement is required for use by any for-profit entity, use in services, and use in sponsored academic research. For information regarding any such use, please contact
[email protected].
Biochem/physiol ActionsCancer Cells
Analysis Note• Each vial contains ≥1X10⁶ viable cells.
• Cells are tested negative for HPV-16, Hepatitis A, B, C, and HIV-1 & 2 viruses by PCR.
• Cells are negative for mycoplasma contamination.
• Cells are positive for HPV-18 by PCR.
• Each lot of cells is genotyped by STR analysis to verify the unique identity of the cell line.
DisclaimerRESEARCH USE ONLY. This product is regulated in France when intended to be used for scientific purposes, including for import and export activities (Article L 1211-1 paragraph 2 of the Public Health Code). The purchaser (i.e. enduser) is required to obtain an import authorization from the France Ministry of Research referred in the Article L1245-5-1 II. of Public Health Code. By ordering this product, you are confirming that you have obtained the proper import authorization.
