Eph-like receptor tyrosine kinase hEphB1b (422-432)

Eph-like receptor tyrosine kinase hEphB1b (422-432) is a synthetic peptide fragment corresponding to amino acids 422 to 432 of the human EphB1b protein, a member of the Eph receptor tyrosine kinase family. Eph receptors play a central role in mediating cell-cell communication, guiding cell positioning, and orchestrating developmental processes through bidirectional signaling. This peptide segment is of particular interest for researchers investigating receptor-ligand interactions, intracellular signaling cascades, and the structural determinants of Eph receptor function. Its specific sequence enables targeted studies on the functional domains of EphB1b, offering valuable insights into the mechanisms underlying cell guidance, neural development, and tissue patterning.

Peptide mapping: As a well-defined fragment of the EphB1b receptor, this peptide serves as an essential tool for peptide mapping studies. Researchers utilize it to identify and characterize epitopes, post-translational modifications, or interaction sites within the full-length protein. By employing this segment in mass spectrometry or immunochemical assays, scientists can pinpoint specific regions involved in protein-protein interactions or receptor activation, thereby advancing the understanding of Eph receptor structure-function relationships.

Protein-protein interaction studies: The peptide is widely used in in vitro binding assays to probe the molecular determinants of EphB1b interactions with ephrin ligands or intracellular adaptor proteins. Its defined sequence allows for the dissection of binding affinities, mapping of contact residues, and analysis of conformational changes upon ligand engagement. Such studies are fundamental for elucidating the signaling mechanisms that govern cell migration, axon guidance, and tissue boundary formation in developmental biology.

Antibody production and validation: Synthetic peptides derived from receptor domains are frequently employed as immunogens for the generation of highly specific polyclonal or monoclonal antibodies. The hEphB1b (422-432) peptide provides a unique epitope for raising antibodies that recognize distinct regions of the EphB1b receptor. These antibodies are invaluable for applications in Western blotting, immunoprecipitation, immunohistochemistry, and other immunodetection techniques, facilitating the selective detection and localization of EphB1b in complex biological samples.

Signal transduction research: Investigators use this peptide to explore the phosphorylation dynamics and downstream signaling pathways associated with EphB1b activation. By incorporating the peptide into kinase assays or cellular signaling models, researchers can assess the specificity of phosphorylation events, identify interacting kinases or phosphatases, and delineate the molecular circuits modulated by Eph receptor engagement. This approach aids in unraveling the complexities of tyrosine kinase-mediated signal transduction in various cellular contexts.

Peptide-based assay development: The defined sequence and biochemical properties of the EphB1b (422-432) fragment make it a valuable standard or substrate in the design of peptide-based assays. It can be incorporated into high-throughput screening platforms for the identification of small-molecule inhibitors, peptide mimetics, or modulators of Eph receptor function. Such assays are instrumental in advancing basic research on receptor signaling and in the early stages of drug discovery focused on modulating Eph-ephrin interactions.

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