Eukaryotic translation elongation factor 1 alpha 1 (115-129)

Eukaryotic translation elongation factor 1 alpha 1 (115-129) is a synthetic peptide fragment derived from the highly conserved eEF1A1 protein, which plays a central role in the elongation phase of eukaryotic protein synthesis. Spanning amino acids 115 to 129, this peptide segment reflects a region implicated in the regulation of ribosomal function and the dynamic interaction with aminoacyl-tRNA during mRNA translation. Its precise sequence and structural characteristics make it a valuable tool for researchers investigating the molecular mechanisms of translation, post-translational modifications, and protein-protein interactions within the cellular context.

Peptide-based interaction studies: The 115-129 fragment of eEF1A1 serves as a targeted probe for mapping protein-protein interactions that govern translational control. Researchers utilize this peptide in affinity purification assays, pull-down experiments, and surface plasmon resonance analyses to identify and characterize binding partners that associate with the elongation machinery. Such studies are instrumental in elucidating the regulatory networks that modulate ribosome activity and translation fidelity, providing insights into the broader landscape of gene expression regulation.

Antibody epitope mapping: The defined sequence of eEF1A1 (115-129) is frequently employed as an immunogenic epitope for the development and validation of antibodies specific to the elongation factor. By using this peptide in immunoassays such as ELISA, Western blotting, or immunoprecipitation, researchers can assess antibody specificity, map antigenic determinants, and optimize reagent performance for the detection of eEF1A1 in various experimental systems. This approach supports the advancement of reliable analytical tools for cellular and molecular biology research.

Phosphorylation and post-translational modification analysis: As a representative segment of the elongation factor, the 115-129 region is of interest for studying potential post-translational modifications, including phosphorylation, methylation, or acetylation. Synthetic versions of this peptide are used in kinase assays and mass spectrometry workflows to investigate modification sites and their functional consequences on protein activity. Such analyses contribute to a deeper understanding of how dynamic modifications of eEF1A1 influence translational regulation and cellular signaling pathways.

Structural and conformational studies: The well-defined amino acid sequence of the 115-129 peptide enables its use in biophysical and structural investigations, such as circular dichroism spectroscopy, nuclear magnetic resonance (NMR), or crystallography. These studies provide valuable data on secondary structure propensity, folding dynamics, and interaction surfaces within the eEF1A1 protein. Insights gained from such research inform the design of molecular probes and the development of inhibitors targeting the translation machinery.

Peptide synthesis and method development: The eEF1A1 (115-129) fragment is also utilized as a model substrate in the optimization of solid-phase peptide synthesis protocols and analytical method validation. Its moderate length and representative sequence complexity make it suitable for benchmarking peptide purification, quantification, and characterization techniques. By employing this peptide in method development, laboratories can refine their workflows for the production and analysis of custom peptides, supporting a wide range of applications in proteomics and molecular biology.

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