Dermorphin peptide for sale through PX1 Research is an analytical-grade heptapeptide intended exclusively for in vitro assay systems and preclinical laboratory investigation. Synthesized with a distinctive D-alanine residue for enhanced enzymatic resistance, each lot undergoes rigorous RP-HPLC and mass spectrometry verification to guarantee superior sequence fidelity and purity for baseline molecular research.
Dermorphin peptide for sale through PX1 Research is an analytical-grade heptapeptide intended exclusively for in vitro assay systems and preclinical laboratory investigation. Synthesized with a distinctive D-alanine residue for enhanced enzymatic resistance, each lot undergoes rigorous RP-HPLC and mass spectrometry verification to guarantee superior sequence fidelity and purity for baseline molecular research.
When purchasing dermorphin peptide for sale, scientific institutions require verifiable purity, absolute lot-to-lot consistency, and comprehensive analytical documentation. Dermorphin is a naturally derived or synthetically optimized heptapeptide originally isolated from the skin secretions of South American *Phyllomedusa* frogs. Due to its unique structural incorporation of a D-amino acid, it serves as a crucial reference compound in pharmacological studies targeting the mu-opioid receptor (MOR).
PX1 Research supplies research-grade dermorphin manufactured under strict quality standards within USA-based facilities. Every batch undergoes exhaustive analytical characterization—including high-performance liquid chromatography (HPLC) and mass spectrometry (MS)—to ensure researchers receive reagents devoid of synthetic artifacts, truncated sequences, or residual reagents. Designed solely for laboratory evaluation, our catalog supports rigorous, reproducible scientific inquiry across academic and private research sectors.
Dermorphin possesses the primary amino acid sequence H-Tyr-D-Ala-Phe-Gly-Tyr-Pro-Ser-NH2, featuring a C-terminal carboxamide modification and a crucial D-alanine at position 2. The presence of D-alanine within a naturally evolved peptide sequence is biologically rare and plays a fundamental role in preserving the molecule against systemic cleavage by common endopeptidases and aminopeptidases.
With a molecular formula of C40H50N8O10 and a molecular weight of approximately 802.88 g/mol, dermorphin exhibits high aqueous solubility in standard physiological buffers once reconstituted. The specific spatial orientation conferred by the D-Ala2 residue stabilizes the N-terminal pharmacophore (Tyr-D-Ala-Phe), which fits precisely into the binding pocket of central and peripheral mu-opioid receptors during *in vitro* displacement binding assays.
Preclinical studies suggest that dermorphin functions as a potent, highly selective full agonist at the mu-opioid receptor sub-type. In radioligand binding assays using brain membrane preparations, dermorphin demonstrates an affinity for MOR that significantly exceeds its binding affinity for delta- or kappa-opioid receptors. This distinct selectivity profile makes it an essential tool for mapping receptor-binding dynamics and downstream intracellular signaling cascades.
Upon binding to the extracellular domain of the mu-opioid receptor, dermorphin stimulates G-protein coupling (*G_i/o*), leading to the inhibition of adenylate cyclase activity and the subsequent reduction of intracellular cyclic AMP (cAMP) levels. In cell culture models, this activation also promotes inward-rectifying potassium channel conductance while suppressing voltage-gated calcium entry. Researchers utilize these mechanisms to study G-protein biased signaling, receptor phosphorylation, and beta-arrestin recruitment patterns in neuropharmacology.
A central focus of peptide engineering is overcoming rapid enzymatic degradation in biological matrices. Dermorphin serves as a classic model for structural stabilization due to its D-amino acid incorporation. In comparative *in vitro* enzymatic stability assays, native L-amino acid peptides undergo rapid cleavage by enzymes such as neutral endopeptidase (NEP 24.11) and dipeptidyl peptidase IV (DPP-IV).
Because mammalian proteases predominantly recognize L-stereoisomers, the D-Ala substitution at position 2 sterically hinders enzymatic recognition and cleavage of the N-terminal Tyr1-D-Ala2 peptide bond. As a result, dermorphin exhibits a significantly extended half-life in serum incubation models compared to endogenous linear opioids, rendering it a valuable reference compound for designing proteolytically resistant peptide therapeutics across our broader collection of research peptides.
Understanding how dermorphin compares to other structurally or functionally related research compounds is critical when designing comparative assay protocols. Below is a comparative overview of key opioid receptor research tools available within our research library.
Dermorphin exhibits primary affinity for the mu-opioid receptor (MOR). In contrast, deltorphin II acts as a highly selective agonist for the delta-opioid receptor (DOR), despite sharing a similar amphibian origin and D-amino acid motif. Meanwhile, synthetic dimeric analogs like biphalin possess dual high-affinity binding to both MOR and DOR, making them useful for investigating cross-talk between receptor subtypes. Additionally, non-peptide-modified analogs such as dalargin incorporate D-Ala modifications within an enkephalin framework, primarily used to assess peripheral receptor activity and tissue protection models. Finally, endogenous peptides like endomorphin-1 display potent MOR selectivity but lack the extended serum half-life conferred by dermorphin's D-Ala2 residue.
Proper handling and reconstitution protocols are vital to maintaining peptide integrity and avoiding aggregation. Dermorphin is supplied as a lyophilized (freeze-dried) sterile powder. Prior to opening the vial, allow the container to equilibrate to room temperature to prevent condensation from introducing moisture to the cake.
For *in vitro* applications, reconstitute dermorphin using sterile bacteriostatic water or laboratory-grade phosphate-buffered saline (PBS, pH 7.4). If higher stock concentrations are required, low concentrations of sterile dilute acetic acid (0.1%) may be utilized to assist initial dissolution before diluting into working buffer solutions. Gently swirl the vial until completely dissolved; avoid aggressive vortexing or sonication, which can induce physical shear stress and potential peptide denaturation.
Lyophilized dermorphin powder should be stored at -20°C for medium-term stability or -80°C for long-term storage in a desiccated environment protected from light exposure. Under these conditions, the dry peptide remains stable for up to 24 months without measurable degradation.
Once reconstituted into aqueous solution, aliquot the working stock into single-use microcentrifuge tubes to prevent repeated freeze-thaw cycles. Liquid aliquots should be maintained at -20°C or -80°C and used within 3 to 6 months. Avoid storing reconstituted solutions in frost-free freezers, as temperature fluctuation cycles accelerate hydrolysis and degradation over time.
At PX1 Research, quality verification is embedded into every stage of production. When sourcing dermorphin peptide for sale, laboratory investigators receive a comprehensive Certificate of Analysis (COA) unique to that specific production lot.
Analytical protocols utilized for lot qualification include:
- **Reverse-Phase HPLC (RP-HPLC):** Verifies chemical purity levels exceeding 98.0%, ensuring the absence of deletion sequences or truncated peptide fragments.
- **Mass Spectrometry (ESI-MS / MALDI-TOF):** Confirms the precise molecular mass of 802.88 Da, verifying accurate primary sequence assembly.
- **Endotoxin Analysis (LAL Assay):** Ensures residual bacterial endotoxin levels remain strictly below <0.01 EU/mg, preventing baseline cellular toxicity or confounding inflammatory responses during sensitive cell culture experiments.
All testing is conducted via ISO 17025 accredited third-party laboratories to provide objective, reproducible verification of every vial shipped.
PX1 Research simplifies procurement for academic facilities, biotechnology firms, and institutional laboratories. Operating from specialized facilities in California and Arizona, we maintain inventory readiness to support same-day dispatch for orders placed Monday through Friday.
For institutions requiring high-volume supplies or specialized batch reservations, our team supports wholesale lab accounts with tailored fulfillment options. Every order is packed in climate-controlled, protective packaging designed to preserve chemical integrity during transit, ensuring your research facility receives high-grade compounds ready for immediate experimental deployment.
What is the primary research application of dermorphin peptide?
Dermorphin is primarily used in preclinical research as a highly selective agonist tool for investigating mu-opioid receptor (MOR) kinetics, G-protein signaling pathways, receptor desensitization mechanisms, and peptide structural stability against enzymatic degradation.
Why does dermorphin contain a D-alanine amino acid?
The D-alanine substitution at position 2 protects the peptide against cleavage by mammalian aminopeptidases and endopeptidases. This modification provides enhanced enzymatic resistance and structural stability compared to all-L-amino acid sequences.
How is dermorphin purity confirmed by PX1 Research?
Every lot of dermorphin undergoes third-party analytical testing, including Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) to verify >98% purity and Mass Spectrometry (MS) to confirm exact molecular mass and sequence identity.
What solvent should be used to reconstitute dermorphin for lab use?
Dermorphin reconstitutes readily in sterile laboratory-grade water or phosphate-buffered saline (PBS, pH 7.4). For difficult concentration targets, a 0.1% acetic acid solution can facilitate complete solubilization prior to buffer dilution.
What are the recommended storage temperatures for dermorphin?
Lyophilized dermorphin powder should be stored desiccated at -20°C or -80°C. Reconstituted liquid aliquots should be frozen at -20°C or colder and protected from light, avoiding repeated freeze-thaw cycles.
What is the endotoxin limit for PX1 Research dermorphin?
PX1 Research subjects all peptide lots to Limulus Amebocyte Lysate (LAL) endotoxin testing, ensuring levels remain strictly below 0.01 EU/mg to prevent cell culture interference.
Is dermorphin authorized for human consumption or clinical use?
No. Dermorphin peptide provided by PX1 Research is strictly designated for laboratory research use only (RUO) and in vitro experimentation. It is not for human, clinical, veterinary, or diagnostic applications.
How does dermorphin differ functionally from deltorphin II?
While both are amphibian-derived peptides containing D-amino acids, dermorphin is highly selective for the mu-opioid receptor (MOR), whereas deltorphin II demonstrates high selectivity for the delta-opioid receptor (DOR).
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.