PEN (rat) is a neuropeptide fragment characterized by a mixture of hydrophobic, aromatic, and basic side chains that support receptor association. The sequence adopts flexible conformations that can stabilize helical or extended states depending on environment. Researchers study its role in neuroendocrine signaling models and receptor-binding assays. Applications include peptide-hormone motif analysis, structure-function research, and analog design.
CAT No: R2607
CAS No:569364-13-2
Synonyms/Alias:PEN (rat);569364-13-2;L-Valine,L-alanyl-L-valyl-L-a-aspartyl-L-glutaminyl-L-a-aspartyl-L-leucylglycyl-L-prolyl-L-a-glutamyl-L-valyl-L-prolyl-L-prolyl-L-a-glutamyl-L-asparaginyl-L-valyl-L-leucylglycyl-L-alanyl-L-leucyl-L-leucyl-L-arginyl-;AKOS032962866;DA-66557;PD080178;
PEN (rat), also known as Peptide E or proenkephalin-derived peptide, is a specialized carbohydrate compound frequently utilized in scientific research focused on neuropeptide signaling and peptide biochemistry. With its unique sequence and structural characteristics, PEN (rat) serves as a valuable tool for investigating the physiological roles of endogenous peptides within the central nervous system of rodent models. Its stability and compatibility with various experimental conditions make it an ideal candidate for in vitro and in vivo studies, especially those exploring the intricate pathways of neuropeptide processing and function. Researchers often select this compound to probe the mechanisms underlying neuronal communication, peptide-receptor interactions, and the modulation of synaptic activity. The accessibility of PEN (rat) in a research-ready format enables efficient experimental design, supporting advanced studies in molecular neuroscience, neuropharmacology, and peptide mapping.
Neuropeptide Signaling Research: PEN (rat) is widely employed to elucidate the complex signaling pathways mediated by proenkephalin-derived peptides in the mammalian brain. By introducing this compound into neuronal cultures or animal models, scientists can monitor its impact on neurotransmitter release, synaptic plasticity, and downstream signaling cascades. Such studies are instrumental in deciphering the regulatory networks that control pain perception, stress response, and emotional processing in rodents, providing foundational insights for comparative neurobiology. The ability of PEN (rat) to interact with specific neuropeptide receptors enables targeted investigation of receptor-ligand dynamics, fostering a deeper understanding of endogenous opioid systems and their physiological significance.
Peptide Processing and Enzymology: In the field of peptide enzymology, PEN (rat) serves as a model substrate for characterizing the activity of peptidases and proteolytic enzymes responsible for neuropeptide maturation and degradation. Researchers utilize it to track enzyme kinetics, substrate specificity, and the generation of bioactive fragments under controlled laboratory conditions. By employing advanced analytical techniques such as mass spectrometry and HPLC, scientists can map the cleavage patterns and post-translational modifications of this peptide, shedding light on the molecular mechanisms governing peptide stability and turnover in neural tissues. These findings contribute to the broader understanding of neuropeptide biosynthesis and catabolism in mammalian systems.
Behavioral Neuroscience Studies: The application of PEN (rat) extends to behavioral neuroscience, where it is used to investigate the functional consequences of neuropeptide modulation on animal behavior. Through targeted administration or genetic manipulation, researchers assess how alterations in proenkephalin-derived peptide levels influence locomotion, anxiety-like responses, and reward-driven behaviors in rodent models. Such experiments are critical for unraveling the neurochemical substrates of motivation, learning, and adaptation, offering valuable perspectives on the interplay between peptide signaling and behavioral phenotypes. The precise delivery of this compound allows for controlled manipulation of neural circuits implicated in complex behaviors.
Pharmacological Screening and Drug Discovery: As a reference compound, PEN (rat) is integral to pharmacological screening platforms designed to identify novel modulators of neuropeptide receptors. By serving as a benchmark for receptor binding assays and functional activity tests, it enables the comparative evaluation of candidate molecules targeting the opioid and non-opioid peptide systems. The reliable performance of this peptide in high-throughput screening formats accelerates the identification of potential therapeutic agents and enhances the predictive value of preclinical models. Its use in structure-activity relationship studies also informs the rational design of peptide analogs with improved bioactivity and selectivity profiles.
Neurochemical Mapping and Localization: PEN (rat) is instrumental in neurochemical mapping studies aimed at delineating the spatial and temporal distribution of proenkephalin-derived peptides in the rodent brain. Techniques such as immunohistochemistry, in situ hybridization, and radioimmunoassay leverage its specificity to visualize peptide expression patterns across different brain regions and developmental stages. These investigations facilitate the construction of detailed neuroanatomical maps, supporting the identification of neural circuits involved in sensory processing, emotional regulation, and homeostatic control. The precise localization of this peptide advances the understanding of neuropeptide networks and their roles in central nervous system function.
In summary, the diverse applications of PEN (rat) underscore its value as a research tool for advancing knowledge in neuropeptide signaling, peptide enzymology, behavioral neuroscience, pharmacological screening, and neurochemical mapping. Its versatility and scientific relevance continue to drive innovation in experimental neuroscience, supporting the exploration of fundamental processes that govern neural function and behavior in rodent models.
2. SERS spectrum of the peptide thymosin‐β4 obtained with Ag nanorod substrate
3. Myotropic activity of allatostatins in tenebrionid beetles
4. Cell-based adhesion assays for isolation of snake venom’s integrin antagonists
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