Every batch of PX1 Research KPV 2mg tripeptide is backed by a lot-specific Certificate of Analysis (COA) confirming chemical purity, sequence integrity, and ultra-low endotoxin levels. Manufactured in the USA within GMP-compliant facilities, our KPV research compounds undergo rigorous ISO 17025 third-party verification to ensure reliable, reproducible data across preclinical intestinal barrier and inflammatory signaling models.
Every batch of PX1 Research KPV 2mg tripeptide is backed by a lot-specific Certificate of Analysis (COA) confirming chemical purity, sequence integrity, and ultra-low endotoxin levels. Manufactured in the USA within GMP-compliant facilities, our KPV research compounds undergo rigorous ISO 17025 third-party verification to ensure reliable, reproducible data across preclinical intestinal barrier and inflammatory signaling models.
A KPV COA (Certificate of Analysis) serves as the primary scientific validation of identity, purity, and safety for the research tripeptide Lys-Pro-Val (2mg). In rigorous laboratory research, data integrity depends entirely on the chemical fidelity of the reagent. PX1 Research provides batch-matched COAs for every lot of KPV, utilizing independent ISO 17025 certified testing laboratories to execute Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) and Electrospray Ionization Mass Spectrometry (ESI-MS). The resultant analytical profile verifies peptide identity via exact molecular mass matching and confirms chemical purity exceeding 99.0%, ensuring that confounding counter-ions or truncation fragments do not compromise experimental outcomes.
Beyond structural and chromatographic purity, a comprehensive kpv coa must document microbiological safety and residual solvent parameters. PX1 Research enforces strict limits on bacterial endotoxins using the Chromogenic Limulus Amebocyte Lysate (LAL) assay, guaranteeing levels below 0.01 EU/mg. Furthermore, residual trifluoroacetic acid (TFA) counter-ions derived from solid-phase peptide synthesis (SPPS) are minimized or exchanged, protecting delicate cell culture models from pH shifts and ion-induced toxicity. Laboratory investigators evaluating mucosal barrier dynamics or nuclear factor kappa B (NF-κB) transcription factors can review these lot-specific certificates prior to procurement, establishing complete supply chain transparency.
Lys-Pro-Val (KPV) is a short-chain synthetic tripeptide representing amino acids 11 through 13 of the C-terminal domain of alpha-melanocyte-stimulating hormone (α-MSH). With a molecular formula of C16H30N4O4 and a precise molecular weight of 342.44 g/mol, KPV retains the potent anti-inflammatory properties of its parent hormone without inducing melanogenesis or activating peripheral melanocortin-1 receptors (MC1R) associated with pigmentation. This functional disassociation makes KPV an ideal candidate for isolation assays targeting localized inflammatory signaling cascades.
The molecular architecture of KPV—comprising the basic amino acid L-lysine, the rigid cyclic amino acid L-proline, and the hydrophobic amino acid L-valine—grants it unique physicochemical properties. The central proline residue imparts structural rigidity, offering resistance against rapid enzymatic cleavage by non-specific aminopeptidases in cellular supernatant. Researchers utilizing our research library hub can explore the structural bioengineering that enables short-chain peptides like KPV to exhibit high biological stability relative to larger polypeptide chains.
In preclinical studies, KPV has demonstrated significant efficacy in attenuating inflammatory damage within the gastrointestinal epithelium. In vitro assays using Caco-2 and HT-29 intestinal epithelial monolayers indicate that KPV acts directly on cellular mucosal targets to preserve tight junction integrity. Exposure of cultured monolayers to pro-inflammatory cytokines such as TNF-α and IFN-γ typically results in decreased transepithelial electrical resistance (TEER) and the redistribution of key junctional proteins, including Zonula Occludens-1 (ZO-1), occludin, and claudin-1. Application of synthetic KPV has been shown to mitigate these alterations, preserving membrane polarity and permeability barriers.
In vivo investigations employing rodent models of dextran sulfate sodium (DSS)-induced and trinitrobenzene sulfonic acid (TNBS)-induced colitis further highlight the tissue-protective properties of the tripeptide. In these animal models, administration of KPV attenuated clinical signs of mucosal damage, reduced histological disease activity indices, and suppressed neutrophil infiltration into colonic tissue, as measured by myeloperoxidase (MPO) activity. To explore similar target mechanisms, researchers frequently source our primary KPV 2mg standard alongside articles detailed in our section on tripeptides in gut inflammation.
The primary mechanism of action for KPV centers on its active uptake into target cells via the oligopeptide transporter 1 (PepT1/SLC15A1). PepT1 is an H+-coupled solute carrier predominantly expressed on the apical membrane of intestinal epithelial cells and upregulated under inflammatory conditions. Preclinical data indicate that once transported into the intracellular environment, KPV translocates into the nucleus where it interacts directly with the p65 subunit of nuclear factor kappa B (NF-κB).
By binding to p65, KPV inhibits the phosphorylation and subsequent nuclear accumulation of NF-κB complexes, effectively downregulating the transcription of dependent pro-inflammatory genes. This pathway suppression leads to marked decreases in the expression of Interleukin-1 beta (IL-1β), Interleukin-6 (IL-6), Interleukin-8 (IL-8), and Tumor Necrosis Factor-alpha (TNF-α). Furthermore, in vitro cellular assays suggest that KPV does not induce generalized immunosuppression, but rather modulates hyper-reactive signaling pathways back toward basal homeostatic thresholds.
When designing preclinical models of tissue injury, inflammation, or barrier breakdown, investigators often evaluate KPV against other well-characterized peptide candidates. While KPV functions primarily through PepT1-mediated intracellular NF-κB inhibition, compounds like BPC-157 5mg operate through distinct cytoprotective pathways involving the VEGFR2 signaling cascade and nitric oxide modulation. Similarly, TB-500 5mg acts via actin sequestration to promote cell migration and tissue remodeling, whereas LL-37 5mg exhibits direct antimicrobial membrane-disrupting activities combined with broad immunomodulatory effects.
The following matrix summarizes the comparative parameters between these prominent laboratory research peptides:
PX1 Research maintains rigorous quality control frameworks to guarantee that every batch of KPV meets analytical standards suitable for advanced biochemical experimentation. Independent ISO 17025 accredited laboratories analyze our synthesized lots using RP-HPLC equipped with C18 stationary phases. The resulting chromatograms confirm a narrow, symmetrical single peak, ensuring the absolute absence of truncated peptide sequences, oxidation products, or unreacted coupling reagents. To review detailed testing criteria, visit our analysis protocol guide on peptide purity HPLC analysis.
Mass identity is verified concurrently using Electrospray Ionization Mass Spectrometry (ESI-MS), ensuring the observed monoisotopic mass matches the theoretical value of 342.44 Da with zero deviation. Furthermore, because bacterial endotoxins (lipopolysaccharides) can confound inflammatory assay data by stimulating Toll-like Receptor 4 (TLR4), PX1 Research subjects all lots to rigorous LAL testing, setting an absolute threshold of <0.01 EU/mg. Investigators cross-referencing our complete catalog via all peptides can rely on these identical analytical metrics across our entire inventory.
PX1 Research supplies KPV as a sterile, lyophilized (freeze-dried) cake inside sealed glass vials under inert argon atmospheres. To maintain chemical stability, un-reconstituted vials should be stored in a freezer at -20°C for short-term projects or -80°C for extended storage up to 24 months. Desiccation during storage prevents moisture absorption, which could otherwise induce slow hydrolytic cleavage of the peptide backbone.
When preparing KPV for in vitro assays or cell culture administration, reconstitution must be performed under sterile laminar flow hoods using appropriate laboratory solvents. Standard reconstitution procedure involves adding sterile Bacteriostatic Water or sterile phosphate-buffered saline (PBS, pH 7.4). Swirl gently to dissolve the cake; aggressive vortexing or high-shear agitation should be avoided to prevent peptide aggregation. Once reconstituted, stock solutions should be divided into single-use aliquots and stored at -20°C to eliminate damaging freeze-thaw cycles.
To support academic institutions, pharmaceutical screening facilities, and independent biotechnology labs, PX1 Research provides seamless access to fully documented research reagents. Every vial of KPV features an individualized lot number directly referencing its online analytical dossier. Orders placed before daily cutoffs are dispatched same-day from our dual shipping facilities located in California and Arizona, ensuring rapid, temperature-controlled delivery to minimize transit stress.
For institutions conducting high-throughput screening or large-scale animal model trials requiring bulk quantities and identical lot control, PX1 Research offers structured procurement through our wholesale laboratory portal. Our supply chain guarantees seamless batch consistency, complete COA availability prior to shipment, and direct technical support from our team of analytical chemists.
Where can I view or download the specific kpv coa for my shipment?
Every KPV 2mg order from PX1 Research includes a batch-matched lot number printed directly on the vial label. Investigators can access, view, and download the full HPLC, mass spectrometry, and endotoxin report by entering their lot number into our online COA database or contacting scientific support.
What exact chemical purity level is guaranteed on the KPV COA?
PX1 Research guarantees a minimum chemical purity of ≥98.0% (and frequently >99.0%) for all KPV lots, as verified by RP-HPLC peak area integration performed by independent ISO 17025 accredited laboratories.
How is the molecular identity of KPV verified in the laboratory analysis?
Identity is confirmed using Electrospray Ionization Mass Spectrometry (ESI-MS). The analytical report documents the theoretical molecular mass of KPV (342.44 Da) matched against the experimentally observed mass peak to confirm correct synthesis.
What endotoxin limits are established for PX1 Research KPV 2mg vials?
PX1 Research enforces an industry-leading endotoxin limit of <0.01 EU/mg, verified via quantitative Chromogenic Limulus Amebocyte Lysate (LAL) testing to prevent TLR4 pathway contamination in cell culture models.
What is the amino acid sequence of KPV?
KPV is a tripeptide composed of L-lysine, L-proline, and L-valine (H-Lys-Pro-Val-OH), corresponding to the C-terminal amino acid sequence 11–13 of alpha-melanocyte-stimulating hormone (α-MSH).
What cellular transport mechanism mediates KPV cellular entry?
In vitro research demonstrates that KPV enters target epithelial cells primarily via the proton-coupled oligopeptide transporter 1 (PepT1 / SLC15A1), which is frequently upregulated in inflamed tissues.
How should lyophilized KPV 2mg be stored upon receipt?
Lyophilized KPV should be stored at -20°C for immediate use or -80°C for long-term storage. Vials must be kept dry and shielded from light to maintain structural stability for up to 24 months.
What reconstituting solvent is recommended for KPV cell culture research?
For in vitro cellular assays, sterile phosphate-buffered saline (PBS, pH 7.4) or sterile Bacteriostatic Water is recommended. Stock solutions should be aliquoted and frozen at -20°C to avoid repeated freeze-thaw cycles.
Is KPV derived from synthetic or natural sources?
PX1 Research KPV is synthesized entirely via high-precision Solid-Phase Peptide Synthesis (SPPS) under GMP-compliant conditions, ensuring 100% batch consistency free from biological animal contaminants.
How can research facilities purchase KPV in bulk with identical lot numbers?
Institutional laboratories and high-throughput research facilities can request bulk quantities and single-lot allocations through our dedicated wholesale account management portal at /wholesale.
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.