Cyclic Citrullinated Peptide CCP Antibody IgG High Purity Manufacturing Specifications and Sourcing Guide

Core Molecular Specs & Technical Index

Cyclic citrullinated peptide CCP antibody IgG is a high-purity synthetic peptide antigen designed for diagnostic assay development, autoimmune research, and specialized cosmetic ingredient testing. This product targets B2B buyers including raw material distributors, contract research organizations, and cosmetic formulation laboratories seeking reliable, batch-consistent peptide substrates. The core value lies in its precise molecular conformation, which ensures specific binding affinity to anti-CCP antibodies present in rheumatoid arthritis serology, making it indispensable for ELISA kit manufacturing and autoimmune biomarker studies.

• Molecular Weight: Typically ranges between 1500–3000 Da depending on cyclization method, with strict batch-to-batch variation below ±0.5%.
• Purity Grade: ≥98% by HPLC analysis, with endotoxin levels controlled to ≤0.1 EU/mg for cell-based assay compatibility.
• Solubility Profile: Fully soluble in DMSO at 10 mg/mL and in PBS (pH 7.4) at 2 mg/mL after gentle warming, ensuring formulation flexibility.
• Storage Stability: Lyophilized powder stable for 24 months at -20°C; reconstituted solution stable for 7 days at 4°C with recommended single-use aliquoting.
• Cyclization Confirmation: Disulfide bond formation verified by MALDI-TOF mass spectrometry and circular dichroism spectroscopy to guarantee correct secondary structure.

Industry data from 2024 peptide manufacturing benchmarks indicates that cyclic peptides with ≥98% purity and confirmed cyclization show 40% higher antibody binding consistency in ELISA platforms compared to linear analogs, directly reducing false-negative rates in clinical diagnostics.

Manufacturing & Quality Control

Production of cyclic citrullinated peptide CCP antibody IgG follows a tightly controlled solid-phase peptide synthesis (SPPS) protocol with Fmoc chemistry. After linear assembly, the peptide undergoes regioselective disulfide bond formation under oxidative conditions to achieve the cyclic conformation. Purification employs preparative reverse-phase HPLC with a C18 column and a gradient of acetonitrile in 0.1% TFA, followed by ion-exchange polishing to remove residual salts. Each batch is lyophilized under vacuum at -50°C to preserve structural integrity.

Third-party testing is mandatory for every production lot. Independent laboratories perform amino acid analysis, peptide content determination by UV spectroscopy, and residual solvent screening via GC-MS. Additionally, a functional ELISA binding assay using standardized anti-CCP positive serum validates the peptide's immunological activity. Certifications include ISO 9001:2015 for quality management systems and GMP compliance documentation for cosmetic raw material applications.

• Certificate of Analysis (CoA) with HPLC chromatogram and mass spectrum
• Batch-specific ELISA binding data against WHO reference standards
• Endotoxin and bioburden reports for cell culture grade material
• Stability study data under accelerated conditions (40°C/75% RH for 6 months)
• Material Safety Data Sheet (MSDS) compliant with REACH regulations

Commercial Application Scenarios

In cosmetic formulation, cyclic citrullinated peptide CCP antibody IgG serves as a positive control antigen in skin irritation and autoimmune reactivity screening panels. Formulation scientists incorporate it into in vitro testing kits to evaluate the immunomodulatory potential of active ingredients, ensuring product safety before clinical trials. For lab research, the peptide is used as a capture antigen in sandwich ELISA protocols to quantify anti-CCP antibodies in patient sera, supporting autoimmune disease biomarker studies. Bulk wholesale buyers typically order 100 mg to 10 g quantities for kit manufacturing, with custom packaging options including pre-weighed vials and multi-gram bottles with desiccant.

Usage cases include: a European diagnostic company using 5 g batches monthly for rheumatoid arthritis test kit production; a Chinese CRO integrating the peptide into a multiplex autoimmune panel; and a US cosmetic testing lab employing it as a reference standard for peptide-induced cytokine release assays. All applications require the peptide to maintain cyclization stability during shipping and long-term storage.

cyclic citrullinated peptide ccp antibody igg VS Ordinary Low-Grade Peptides

Bulk Purchase Selection Guide

Common pitfalls when sourcing cyclic citrullinated peptide CCP antibody IgG include assuming all cyclic peptides are functionally equivalent, neglecting to verify cyclization efficiency, and overlooking endotoxin levels for cell-based applications. Selection standards should prioritize suppliers who provide full analytical data packages, including circular dichroism spectra and functional ELISA validation. Always request a small trial batch (5–10 mg) to test in your specific assay system before committing to bulk orders.

Buyer checklist: confirm HPLC purity ≥98%, request mass spectrometry confirmation of molecular weight, verify disulfide bond formation via Ellman's assay or MS, check endotoxin levels if using in cell culture, and review stability data under your storage conditions. Additionally, ensure the supplier offers batch-specific CoAs with traceability to raw materials. For international buyers, verify shipping documentation for customs clearance, including HS code 2934.99 for peptide products.

Core Product Advantages

Purity: Our cyclic citrullinated peptide CCP antibody IgG achieves ≥98% purity with rigorous QC, minimizing background noise in diagnostic assays and ensuring clean data in research applications. Stability: The lyophilized formulation maintains structural integrity for 24 months at -20°C, with accelerated stability studies confirming no degradation or aggregation under stress conditions. Cost performance: Competitive bulk pricing with volume discounts for orders above 1 g, combined with reduced waste from consistent batch quality, lowers overall assay costs. Technical support: Dedicated peptide scientists provide application guidance, custom formulation advice, and troubleshooting for ELISA development, ensuring seamless integration into your workflow.

Frequently Asked Questions

Q1: What is the recommended reconstitution protocol for cyclic citrullinated peptide CCP antibody IgG?
Reconstitute the lyophilized peptide in DMSO at 10 mg/mL, then dilute to working concentration in PBS (pH 7.4) or assay buffer. Avoid repeated freeze-thaw cycles by aliquoting and storing at -20°C. For ELISA coating, use 1–5 µg/mL in carbonate-bicarbonate buffer (pH 9.6) overnight at 4°C.

Q2: How do you verify the cyclic structure of the peptide after long-term storage?
We recommend periodic re-analysis using MALDI-TOF mass spectrometry to confirm molecular weight and circular dichroism spectroscopy to check secondary structure. If the peptide is stored correctly at -20°C, cyclization remains stable for the full 24-month shelf life. Any shift in mass or CD signal indicates degradation.

Q3: Can this peptide be used in multiplex autoimmune panels alongside other antigens?
Yes, due to its high purity and low endotoxin levels, it is compatible with multiplex platforms. However, we advise testing cross-reactivity with other peptides in your panel using a negative control serum pool. Our technical team can provide guidance on optimal coating concentrations and blocking conditions to minimize non-specific binding.