Telomerase reverse transcriptase (hTRT) (461-469)

Telomerase reverse transcriptase (hTRT) (461-469) is a synthetic peptide fragment derived from the catalytic subunit of human telomerase. As a segment corresponding to amino acid residues 461 through 469 of hTERT, this peptide represents a defined epitope within the reverse transcriptase domain, a region critical for enzymatic activity in telomere elongation. Its sequence and biochemical properties make it a valuable tool for probing telomerase structure-function relationships, investigating protein-protein interactions, and supporting the development of analytical assays in telomere biology research. Given the central role of telomerase in chromosome stability, cellular aging, and oncogenesis, this peptide offers significant utility in a range of molecular and cellular research contexts.

Epitope mapping: Researchers utilize the hTRT (461-469) peptide to map antigenic determinants within the telomerase reverse transcriptase protein. By employing this defined peptide in immunological assays such as ELISA, Western blotting, or T-cell epitope screening, investigators can identify and characterize antibody or T-cell responses specific to the 461-469 region. Such studies are essential for understanding immune recognition of telomerase in cancer immunology, as well as for developing targeted reagents for telomerase detection.

Protein interaction studies: The defined sequence of this peptide enables detailed investigation of protein-protein interactions involving the reverse transcriptase domain of hTERT. By serving as a binding partner or competitive inhibitor in in vitro assays, it allows researchers to dissect the molecular interfaces between telomerase and its regulatory cofactors, chaperones, or nucleic acid substrates. These studies inform understanding of telomerase assembly, regulation, and function at the molecular level.

Peptide-based assay development: The hTRT (461-469) fragment is frequently incorporated into the development of sensitive and specific analytical assays for telomerase. Its use as a standard, calibrator, or capture reagent in immunoassays facilitates the quantification or detection of telomerase components in biological samples. Such applications are especially relevant in basic research settings where precise measurement of telomerase activity or abundance is required.

Structural and functional analysis: Employing this peptide as a model substrate or probe supports structural studies of the telomerase reverse transcriptase domain. Techniques such as circular dichroism spectroscopy, NMR, or crystallography can leverage the peptide to elucidate conformational features, folding dynamics, or post-translational modification sites within the parent protein. Insights gained from such analyses contribute to a deeper understanding of the structural determinants underlying telomerase activity and regulation.

Peptide synthesis optimization: The defined sequence and physicochemical properties of the 461-469 fragment provide a practical template for optimizing solid-phase peptide synthesis protocols. By using this peptide in method development or quality control, laboratories can refine synthesis conditions, purification strategies, and analytical characterization workflows. Such process optimization supports the reliable production of research-grade peptides for telomerase-related studies and broader peptide science applications.

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