VEGFR2/KDR fragment 1 (614-624)

VEGFR2/KDR fragment 1 (614-624) is a synthetic peptide corresponding to a specific amino acid sequence within the intracellular domain of Vascular Endothelial Growth Factor Receptor 2 (VEGFR2, also known as KDR). As a critical component of the VEGFR2 receptor, this peptide fragment is highly relevant in studies focused on angiogenesis, signal transduction, and receptor-ligand interactions. Its well-defined sequence enables precise biochemical and biophysical investigations, making it a valuable tool for research into vascular biology, kinase activity, and peptide-protein interactions. The fragment's defined structure and origin from a key regulatory region of VEGFR2 enhance its utility in dissecting molecular mechanisms underlying endothelial cell function and vascular signaling pathways.

Signal Transduction Research: The peptide fragment serves as a model substrate for studying VEGFR2-mediated phosphorylation and downstream signaling cascades. Researchers utilize this sequence to examine kinase-substrate specificity, phosphorylation kinetics, and the molecular determinants of VEGFR2 activation. By enabling controlled in vitro assays, the fragment aids in elucidating the mechanisms by which VEGFR2 transduces extracellular signals into cellular responses, providing insight into the regulation of angiogenic processes at the molecular level.

Protein-Protein Interaction Mapping: The defined sequence of the VEGFR2/KDR fragment allows for detailed investigation of protein-protein interactions involving the receptor's intracellular domain. It is commonly used in pull-down assays, surface plasmon resonance studies, and co-immunoprecipitation experiments to characterize binding partners, adaptor proteins, and regulatory molecules that associate with this region. These studies are essential for mapping the interaction network surrounding VEGFR2 and understanding how these interactions modulate receptor function and signal propagation.

Antibody Development and Epitope Mapping: The synthetic peptide is frequently employed as an immunogen or as a standard in antibody validation protocols. Its use facilitates the generation of sequence-specific antibodies targeting the 614-624 region of VEGFR2, which are critical for applications such as immunoblotting, immunoprecipitation, and immunofluorescence. Additionally, the fragment supports precise epitope mapping, enabling researchers to define antibody binding sites and to assess antibody specificity and affinity for this domain.

Peptide-Based Assay Development: The fragment provides a reliable standard for the development and optimization of biochemical assays aimed at quantifying kinase activity, inhibitor screening, or measuring peptide phosphorylation. It is particularly valuable in high-throughput screening platforms where reproducibility and sequence fidelity are paramount. By serving as a consistent substrate or control, the peptide supports robust assay performance and data comparability across experimental systems.

Structural and Biophysical Studies: The well-characterized nature of the VEGFR2/KDR fragment makes it suitable for structural biology approaches such as NMR spectroscopy, circular dichroism, or crystallography. Researchers exploit its defined sequence to investigate conformational dynamics, secondary structure propensity, and molecular recognition events. These studies contribute to a deeper understanding of the structural features that govern VEGFR2 function, and they inform the rational design of modulators or inhibitors targeting this critical signaling receptor.

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