Protein kinase Mξ (PKMξ), as an active form of protein kinase C (PKC) isozyme, is necessary and potent for long-term potentiation (LTP) maintenance. ZIP is a novel and cell-permeable inhibitor for PKMξ and therefore it can block LTP.
CAT No: R0804
CAS No:863987-12-6
Synonyms/Alias:863987-12-6;ZIP;z-Pseudosubstrate inhibitory peptide;Zeta inhibitory peptide;HB0669;myristoyl-Ser-Ile-Tyr-Arg-Arg-Gly-Ala-Arg-Arg-Trp-Arg-Lys-Leu-OH;AKOS024457161;C90H154N30O17;G13155;Myr-Ser-Ile-Tyr-Arg-Arg-Gly-Ala-Arg-Arg-Trp-Arg-Lys-Leu-OH;
ZIP, also known as zeta inhibitory peptide, is a synthetic peptide compound widely recognized for its ability to modulate protein kinase M zeta (PKMζ) activity. As a cell-permeable peptide inhibitor, it is structurally designed to mimic the pseudosubstrate sequence of PKMζ, thereby selectively blocking its kinase function. ZIP has become a valuable tool in neurobiological and biochemical research, particularly in studies seeking to dissect the molecular underpinnings of memory, synaptic plasticity, and signal transduction mechanisms. Due to its specificity and robust inhibitory properties, it enables researchers to probe the physiological roles of atypical protein kinase C isoforms with precision, making it an essential reagent in the investigation of complex cellular signaling networks.
Signal transduction studies: In the context of intracellular signaling research, ZIP is frequently employed to inhibit PKMζ-dependent pathways. Its application allows for targeted disruption of downstream phosphorylation events, enabling scientists to delineate the contributions of PKMζ to various signaling cascades. By selectively blocking this kinase, researchers can investigate how PKMζ influences processes such as long-term potentiation (LTP), synaptic maintenance, and cellular responses to external stimuli, thereby elucidating its role in broader signal transduction frameworks.
Neuroscience and memory research: The peptide is extensively utilized in neurobiology to explore the molecular mechanisms underlying memory formation and maintenance. ZIP's ability to inhibit PKMζ activity in neuronal tissues provides a unique experimental approach to assessing the persistence of synaptic strength and memory traces. Its use in animal models and neuronal cultures has helped clarify the necessity of PKMζ in sustaining long-term memory, contributing to a deeper understanding of the biochemical substrates of learning and cognitive function.
Synaptic plasticity analysis: ZIP plays a critical role in studies of synaptic plasticity, particularly in dissecting the maintenance phase of LTP and long-term depression (LTD). By applying the peptide to hippocampal slices or neuronal cultures, researchers can selectively disrupt the molecular processes that stabilize synaptic changes over time. This targeted inhibition allows for the assessment of PKMζ's involvement in the consolidation and persistence of synaptic modifications, providing insights into the dynamic regulation of neural circuits.
Peptide inhibitor validation: As a prototypical pseudosubstrate peptide inhibitor, ZIP serves as a reference compound in the validation of novel kinase inhibitors. Its well-characterized mechanism of action and reproducible effects make it a benchmark tool in assays designed to screen for specificity and efficacy of new inhibitory peptides or small molecules targeting atypical protein kinase C isoforms. Researchers rely on ZIP to establish assay baselines and to compare the functional impact of experimental inhibitors in both in vitro and ex vivo systems.
Molecular mechanism exploration: Beyond its applications in neuroscience, ZIP is utilized in broader biochemical studies to interrogate the molecular mechanisms governing kinase regulation and substrate recognition. By leveraging its selective inhibitory properties, scientists can dissect the structural and functional relationships between PKMζ and its interacting partners. This facilitates a more nuanced understanding of kinase-substrate interactions, regulatory feedback loops, and the molecular determinants of enzyme specificity within complex cellular environments.
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