Inhibitor of protein kinase C (PKC) ζ; attached to cell permeabilisation Antennapedia domain vector peptide.
CAT No: R0948
CAS No:93755-85-2
Synonyms/Alias:93755-85-2;Gastrin-Releasing Peptide, human;GRP (human);GASTRIN RELEASING PEPTIDE, HUMAN;DTXSID00631217;DA-73877;Valylprolylleucylprolylalanylglycylglycylglycylthreonylvalylleucylthreonyllysylmethionyltyrosylprolylarginylglycylasparaginylhistidyltryptophylalanylvalylglycylhistidylleucylmethioninamide;
Protein kinase C zeta pseudosubstrate is a synthetic peptide analog specifically designed to mimic the pseudosubstrate region of the PKCζ isoform, a member of the atypical protein kinase C family. Distinguished by its ability to competitively inhibit the substrate-binding site, this peptide serves as a highly selective tool for dissecting the regulatory mechanisms governing PKCζ activity in cellular signaling pathways. Its unique sequence and structural properties make it an invaluable reagent for researchers investigating the role of PKCζ in diverse biological contexts, including signal transduction, cellular differentiation, and metabolic regulation. As a functional inhibitor, the compound provides a targeted approach for modulating kinase activity without affecting other PKC isoforms, facilitating precise experimental manipulation in both in vitro and in vivo systems.
Kinase inhibition assays: As a potent and isoform-selective inhibitor, the PKC zeta pseudosubstrate is widely employed in biochemical and cell-based kinase activity assays. By occupying the substrate recognition site of PKCζ, the peptide effectively suppresses its catalytic function, enabling researchers to quantify kinase-dependent phosphorylation events and delineate the contribution of PKCζ within complex signaling networks. This application is critical for mapping the downstream effects of PKCζ activation and for validating the specificity of pharmacological inhibitors in mechanistic studies.
Signal transduction research: The pseudosubstrate peptide is a powerful tool for probing the functional significance of PKCζ-mediated signaling cascades. By selectively blocking PKCζ activity, investigators can assess the impact of this kinase on pathways such as NF-κB activation, insulin signaling, and cell polarity establishment. The use of this inhibitor allows for the dissection of context-dependent roles of PKCζ, providing mechanistic insights into how its dysregulation may contribute to cellular dysfunction or altered physiological responses.
Cellular differentiation studies: In models of stem cell biology and tissue development, the PKC zeta pseudosubstrate is utilized to investigate the involvement of PKCζ in lineage commitment and differentiation processes. Its application enables the selective attenuation of PKCζ-driven signaling, offering a means to evaluate how this kinase influences gene expression, cytoskeletal organization, and the acquisition of specialized cellular phenotypes. Such studies are instrumental in elucidating the molecular determinants of cell fate decisions.
Metabolic pathway analysis: The ability of the pseudosubstrate inhibitor to modulate PKCζ activity provides a targeted approach for exploring its role in metabolic regulation. Researchers employ the peptide to interrogate PKCζ-dependent signaling events that govern glucose uptake, lipid metabolism, and insulin sensitivity in various cell types. By selectively inhibiting this kinase, it becomes possible to clarify the molecular basis of metabolic adaptation and to identify novel regulatory nodes within metabolic networks.
Protein-protein interaction mapping: The structural mimicry of the PKC zeta pseudosubstrate allows it to serve as a molecular probe for identifying and characterizing protein interactions involving the kinase's regulatory domain. Through competition assays and pull-down experiments, the peptide can reveal binding partners and regulatory proteins that interact with the PKCζ pseudosubstrate motif. This approach enhances the understanding of kinase regulation by scaffolding proteins, adaptors, and upstream activators, thereby contributing to a more comprehensive map of cellular signaling architecture.
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