PX1 Research provides researchers and academic institutions with analytical-grade KPV (Lysine-Proline-Valine) tripeptide synthesized for in vitro and animal research models. Each lot undergoes rigorous third-party testing via RP-HPLC and ESI-MS to confirm peptide purity and sequence identity. Explore domestic inventory backed by verified Certificates of Analysis and expedited US-based dispatch.
PX1 Research provides researchers and academic institutions with analytical-grade KPV (Lysine-Proline-Valine) tripeptide synthesized for in vitro and animal research models. Each lot undergoes rigorous third-party testing via RP-HPLC and ESI-MS to confirm peptide purity and sequence identity. Explore domestic inventory backed by verified Certificates of Analysis and expedited US-based dispatch.
Researchers seeking high-purity KPV for sale in the USA require analytical-grade tripeptide batches backed by comprehensive, lot-specific documentation. PX1 Research supplies verified Lys-Pro-Val (KPV) manufactured under stringent laboratory standards, with independent RP-HPLC and mass spectrometry protocols confirming greater than 98% purity alongside low endotoxin thresholds for reproducible cellular and preclinical experiments.
Domestic procurement eliminates the extended transit times, temperature fluctuations, and customs delays associated with overseas peptide vendors. By maintaining inventory within California and Arizona facilities, PX1 Research ensures rapid order processing and same-day dispatch (Monday through Friday) for laboratory facilities across the United States. All compounds, including our primary KPV tripeptide, are restricted strictly to qualified research and laboratory evaluation.
KPV is a C-terminal tripeptide fragment consisting of the amino acid sequence Lysine-Proline-Valine (Lys-Pro-Val). It represents the C-terminal amino acid sequence (residues 11–13) of alpha-Melanocyte-Stimulating Hormone (alpha-MSH), a naturally occurring neuropeptide involved in various neuroimmunological signaling pathways. Unlike the full-length parent hormone, KPV lacks the melanogenic activity associated with pigment stimulation while retaining distinct immunomodulatory mechanisms observed in cell culture systems.
Due to its short tripeptide chain and low molecular mass (approximately 341.4 g/mol), KPV exhibits unique physical properties, including enhanced structural stability in aqueous solution relative to larger polypeptide chains. Investigational research listed in the alpha-MSH derivative library frequently evaluates KPV to isolate anti-inflammatory signaling events from receptor-mediated melanogenesis, allowing researchers to study targeted biochemical cascades without confounding hormonal responses.
In vitro studies demonstrate that KPV acts as a modulator of nuclear factor kappa B (NF-κB), a primary transcription factor responsible for driving pro-inflammatory gene expression. In stimulated cellular models—including macrophages, epithelial cells, and dendritic cells—KPV administration has been observed to inhibit the translocation of active NF-κB p65 subunits into the cell nucleus. By preventing nuclear entry, KPV downregulates the transcription of key pro-inflammatory cytokines, including TNF-alpha, IL-1beta, and IL-6.
Furthermore, preclinical literature suggests that KPV interacts directly with intracellular targets via specialized transporter proteins. Research indicates that the peptide may be imported into target cells through PepT1 (peptide transporter 1), an apical membrane transporter heavily expressed in intestinal epithelial tissue. Once inside the cytoplasm, KPV exerts its localized suppressive effects on inflammatory signaling networks. Additional mechanistic details regarding intracellular transport can be explored in our broader peptide research database.
A major area of interest for laboratories evaluating KPV is its performance in gut mucosal models and experimental colitis. In preclinical rodent models—such as dextran sulfate sodium (DSS)-induced or trinitrobenzene sulfonic acid (TNBS)-induced colitis—investigators measure parameters including epithelial electrical resistance, tight junction protein expression (such as Occludin and Claudins), and histologic inflammation scores following tripeptide exposure.
Data published in experimental biology literature indicate that KPV helps preserve cell-cell junctions and reduce mucosal permeability under inflammatory challenge. By protecting tight junction complexes and suppressing inflammatory cytokine cascades within the gut lumen, the tripeptide serves as a prominent research tool for mapping mucosal repair mechanisms. Laboratories investigating gastrointestinal dynamics can review related research models within our catalog of gut barrier research peptides.
When designing protocols to investigate tissue repair, epithelial preservation, or inflammatory pathways, researchers frequently compare KPV to other well-characterized research peptides. While KPV functions primarily via PepT1-mediated cellular entry and NF-κB nuclear translocation blockade, alternative compounds operate through distinct molecular targets. For instance, BPC-157 is extensively studied in tendon-to-bone and gastric wound healing models for its upregulation of VEGFR2 signaling and focal adhesion kinase cascades. Similarly, Larazotide operates specifically as a tight junction antagonist targeting the zonulin pathway, and antimicrobial peptides like LL-37 address host defense mechanism pathways via membrane disruption.
Understanding these mechanistic differences allows lab directors to choose the precise compound or combination model for their experimental setup. While Larazotide directly modulates zonulin-mediated receptor opening and BPC-157 stimulates angiogenic signaling, KPV provides a targeted tool for evaluating direct intracellular NF-κB suppression without activating broader systemic growth factor pathways.
The reliability of preclinical assays depends entirely on compound purity and batch consistency. PX1 Research enforces strict quality assurance protocols for every lot of KPV manufactured and distributed. Each batch undergoes dual analytical testing via Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) to verify chemical purity (>98%) and Electrospray Ionization Mass Spectrometry (ESI-MS) to confirm exact molecular weight and amino acid composition.
In addition to purity metrics, controlling endotoxin concentration is critical for cell culture and animal tissue assays. Uncontrolled lipopolysaccharide (LPS) contamination can trigger non-specific inflammatory responses, invalidating cytokine measurement data. PX1 Research provides lot-specific Certificates of Analysis (COAs) generated by independent ISO 17025 accredited testing laboratories, detailing mass spectral validation, HPLC chromatograms, and quantitative LAL endotoxin assays. Researchers can inspect these reports prior to purchasing directly on our complete peptide collection interface.
KPV is supplied as a lyophilized (freeze-dried) cake or powder to maximize long-term peptide stability. For optimal reconstitution in laboratory environments, researchers should follow standard aseptic techniques within a laminar flow hood:
1. Reconstitution Medium: Use sterile Bacteriostatic Water (0.9% benzyl alcohol) or sterile Phosphate-Buffered Saline (PBS, pH 7.4) depending on the intended assay conditions. 2. Reconstitution Technique: Direct the diluent down the glass vial wall rather than spraying directly onto the lyophilized cake. Allow the vial to sit at room temperature for several minutes, gently swirling until fully dissolved. Avoid vigorous vortexing, which can introduce shear stress. 3. Storage Conditions: Lyophilized KPV should be stored at -20°C for short-term preservation or -80°C for extended storage, desiccated and protected from light. Once reconstituted, liquid aliquots should be frozen at -20°C or -80°C to prevent degradation through repeated freeze-thaw cycles.
Reliable domestic delivery is critical for maintaining project timelines in research environments. PX1 Research operates domestic fulfillment centers in California and Arizona, allowing us to process and ship orders standardly on the same business day when placed before cutoff times. Domestic shipping avoids international customs holds, transit temperature spikes, and unverified third-party re-handling.
We adhere strictly to US regulatory compliance standards. KPV and all associated compounds are manufactured in GMP-compliant facilities and designated strictly for in vitro laboratory research, analytical testing, and animal model experimentation. PX1 Research does not supply products for human consumption, clinical trials, or therapeutic use. Institutional buyers seeking ongoing bulk supply can explore our wholesale research accounts portal for institutional terms.
What is KPV and what is its primary focus in research?
KPV (Lysine-Proline-Valine) is a tripeptide derived from the C-terminal sequence of alpha-MSH. In preclinical literature, it is primarily studied for its ability to suppress NF-κB inflammatory signaling pathways and modulate mucosal epithelial repair in intestinal models.
How does PX1 Research verify the purity of KPV for sale in the USA?
Every lot of KPV manufactured for PX1 Research is analyzed by an independent ISO 17025 accredited laboratory using RP-HPLC (to confirm >98% chemical purity) and ESI-MS (to verify exact molecular mass). Certificates of Analysis are publicly available per lot.
What are the recommended storage conditions for lyophilized KPV?
Lyophilized KPV should be stored desiccated at -20°C or -80°C upon receipt. Avoid exposure to direct light and ambient moisture to maintain peptide stability prior to laboratory reconstitution.
What diluent should be used to reconstitute KPV for laboratory assays?
KPV can be reconstituted using sterile Bacteriostatic Water or sterile Phosphate-Buffered Saline (PBS, pH 7.4), depending on the specific cell culture or animal model protocol requirements.
Does KPV exhibit melanogenic activity like full-length alpha-MSH?
No. Preclinical data show that the truncated tripeptide fragment KPV lacks the melanogenic (pigment-stimulating) binding affinity of the full alpha-MSH hormone, making it a selective tool for studying isolated anti-inflammatory pathways.
Are PX1 Research compounds suitable for veterinary or human use?
No. All products sold by PX1 Research, including KPV, are explicitly intended for laboratory research use only (in vitro and animal model assays). They are strictly not for human, veterinary, therapeutic, or diagnostic application.
What is the typical endotoxin threshold for PX1 Research KPV lots?
PX1 Research targets ultra-low endotoxin levels (typically <0.1 EU/mg as measured by LAL assay) to ensure compounds do not induce non-specific inflammatory artifacts in sensitive cell cultures or tissue models.
Where does PX1 Research ship KPV orders from within the United States?
Orders are dispatched directly from domestic fulfillment centers located in California and Arizona, providing fast, reliable transit across all 50 states without international border delays.
All products are sold strictly for laboratory and research use only. Not for human or veterinary use, diagnosis, treatment or consumption. Statements have not been evaluated by the FDA.