Peptide5 offers a modular peptide sequence used to explore receptor-associated motifs and conformational plasticity. Residue diversity facilitates binding studies and folding assessments. Researchers evaluate its dynamic structural behavior across environments. Uses include structural biology, ligand optimization, and mechanistic analysis.
CAT No: R2341
CAS No:916977-43-0
Synonyms/Alias:Peptide5;916977-43-0;Peptide 5 trifluoroacetate salt;L-Threonine,L-valyl-L-a-aspartyl-L-cysteinyl-L-phenylalanyl-L-leucyl-L-seryl-L-arginyl-L-prolyl-L-threonyl-L-a-glutamyl-L-lysyl-;Peptide5?;CHEMBL4743934;HY-P2275;AKOS034831582;AS-88473;DA-66580;PD080225;CS-0121060;G79465;
Peptide5 is a synthetic peptide compound widely recognized for its role as a selective connexin43 hemichannel inhibitor, making it a valuable tool in cellular communication and gap junction research. Structurally, it mimics a portion of the extracellular loop of connexin43, enabling it to modulate intercellular signaling pathways with high specificity. Its unique biochemical properties have established it as an essential reagent for studies focused on cell-cell communication, tissue homeostasis, and the molecular mechanisms underlying various physiological and pathophysiological processes. The ability of Peptide5 to selectively block connexin43 hemichannels without substantially affecting gap junctional intercellular communication distinguishes it from broader-spectrum inhibitors, providing researchers with a precise approach to dissecting connexin-mediated signaling events.
Gap Junction and Hemichannel Research: Peptide5 is extensively employed as a research tool for investigating the functional dynamics of connexin43 hemichannels in a variety of cell types and tissue models. By selectively inhibiting hemichannel activity, it enables the dissection of connexin43's roles in ATP release, calcium signaling, and paracrine communication, independent of gap junctional coupling. This specificity allows researchers to differentiate between the contributions of hemichannels and gap junctions to cellular physiology, supporting the elucidation of complex signaling networks within multicellular systems.
Cellular Injury and Stress Response Studies: In experimental models of cellular injury, ischemia, or oxidative stress, Peptide5 serves as a critical probe for assessing the involvement of connexin43 hemichannels in pathological processes. Its ability to modulate hemichannel opening provides a means to study the release of pro-inflammatory mediators, ionic dysregulation, and cell death pathways associated with tissue damage. These investigations have advanced the understanding of connexin-mediated mechanisms in neurobiology, cardiology, and organ preservation research, offering insights into the molecular underpinnings of cellular injury responses.
Inflammation and Immune Modulation Research: The peptide's capacity to regulate connexin43 hemichannel-mediated signaling has made it instrumental in studies of immune cell activation and inflammatory cascades. By blocking the release of signaling molecules such as ATP and glutamate through hemichannels, it enables researchers to unravel the interplay between connexin activity and immune cell function. This application is particularly relevant in models of neuroinflammation, glial cell communication, and tissue repair, where the modulation of extracellular signaling significantly impacts inflammatory outcomes.
Barrier Function and Tissue Integrity Investigations: Peptide5 is utilized to explore the role of connexin43 hemichannels in maintaining barrier properties of epithelial and endothelial tissues. Its selective inhibition allows scientists to assess how hemichannel activity influences paracellular permeability, tight junction stability, and tissue homeostasis. These studies are fundamental for understanding the molecular mechanisms governing blood-brain barrier integrity, vascular permeability, and epithelial defense, providing a platform for evaluating strategies to preserve or restore barrier function under stress or disease conditions.
Neuroscience and Glial Cell Communication: In the neurosciences, Peptide5 is a preferred reagent for probing astrocyte and oligodendrocyte communication via connexin43 hemichannels. Its use facilitates the investigation of glial network dynamics, neurotransmitter release, and neuron-glia interactions. By modulating hemichannel activity, researchers can dissect the contributions of connexin43 to neural signaling, synaptic plasticity, and the propagation of injury signals within the central nervous system, thereby advancing the field's understanding of both normal brain function and neurological disorders.
4. Cell-based adhesion assays for isolation of snake venom’s integrin antagonists
5. Adipose tissue is a key organ for the beneficial effects of GLP-2 metabolic function
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