Rho guanine nucleotide exchange factor 17 (425-438)

Rho guanine nucleotide exchange factor 17 (425-438) is a synthetic peptide fragment corresponding to amino acids 425 to 438 of the Rho GEF 17 protein, a member of the Dbl family of guanine nucleotide exchange factors. This peptide segment represents a region within the larger protein that plays a key role in the regulation of Rho family GTPases, which are pivotal in controlling cytoskeletal dynamics, cell migration, and signal transduction pathways. As a defined peptide, it provides researchers with a valuable tool for dissecting protein-protein interactions, mapping functional domains, and exploring molecular mechanisms governing cellular processes associated with Rho GTPase signaling.

Protein-protein interaction studies: The 425-438 peptide fragment is frequently employed in biochemical assays to investigate binding affinities and interaction partners specific to the Rho GEF 17 protein. By isolating this segment, researchers can probe the structural determinants responsible for recognition by downstream effectors, regulatory proteins, or other signaling molecules. Such studies are essential for elucidating how this domain contributes to the specificity and regulation of Rho-mediated signal transduction.

Epitope mapping: The defined sequence of this peptide allows for its use in antibody epitope mapping experiments. By serving as a target antigen, it enables the identification and characterization of antibody binding sites within the Rho GEF 17 protein. This application is particularly valuable for developing and validating antibodies with high specificity, which are crucial for immunodetection, immunoprecipitation, or other immunological assays focused on Rho GEF 17 or related signaling components.

Peptide inhibitor screening: The 425-438 region can be utilized in high-throughput screening platforms to identify small molecules or peptides that disrupt interactions mediated by this segment. By incorporating the peptide into binding assays, researchers can discover inhibitors that modulate Rho GEF 17 function, thereby advancing the understanding of regulatory mechanisms and potentially informing the design of molecular probes for pathway dissection.

Phosphorylation and post-translational modification analysis: As a defined substrate, the peptide is suitable for in vitro kinase assays and other enzymatic studies aimed at characterizing post-translational modifications. Researchers can use it to determine whether specific residues within the 425-438 sequence are subject to phosphorylation or other covalent modifications, providing insights into regulatory checkpoints that control Rho GEF 17 activity and downstream signaling fidelity.

Structure-function relationship exploration: The synthetic nature and precise sequence of the peptide make it an ideal model for structural biology studies, including nuclear magnetic resonance (NMR) spectroscopy or circular dichroism (CD) analysis. Such investigations can reveal conformational properties, secondary structure elements, or folding dynamics associated with this region, contributing to a more comprehensive understanding of how the 425-438 segment influences the overall architecture and function of the full-length Rho GEF 17 protein.

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