Products Description
P21 Peptide Powder are short-chain peptides based on the p21 protein, specifically designed for cell cycle regulation and biomedical research. p21 is an important cell cycle regulatory protein that functions to regulate cell cycle progression in response to external stresses, DNA damage, or oxidative stress. By mimicking the function of p21, P21 Peptides are widely used in basic and clinical research in cell biology, cancer research, anti-aging, and other related fields
Key Features
High Purity and Stability:
P21 Peptide Powder utilizes advanced synthesis technology to ensure the high purity and good stability of the P21 peptide, making it suitable for long-term storage and repeated experimental use.
Cell Cycle Regulation:
The P21 peptide regulates cell progression in the G1/S phase by inhibiting the activity of cell cycle-related enzymes, effectively controlling cell growth and division.
DNA Repair and Stress Response:
The P21 peptide can respond to DNA damage signals and participate in the cell repair process, helping to study the repair mechanisms of cells under damaged conditions.
Cancer and Aging Research:
As a tumor suppressor, P21 can prevent the abnormal proliferation of cancer cells. It has significant application potential in cellular senescence, anti-aging, and anti-tumor research.
Main Application Areas
Cell Biology: Used as an experimental tool in cell cycle regulation and cell growth research.
Cancer Research: Investigates tumor cell proliferation, apoptosis, and the potential role of p21 in cancer treatment.
Anti-aging Research: Explores the regulatory role of p21 in cellular senescence and evaluates its application in anti-aging therapies.
Gene Repair and Cellular Stress: Promotes gene repair and cellular stress research by studying the role of p21 peptides in DNA damage responses.
Why Choose Lymall Bpanda's P21 Peptide Powder?
1. Superior Product Quality
High Purity: Our P21 peptides have a purity exceeding 95%, ensuring accurate and reliable results in every experiment.
Precision Synthesis: Utilizing the latest peptide synthesis technology, we ensure high structural and functional stability of the peptides, maximizing the preservation of the biological activity of the P21 protein.
2. Rigorous Quality Control
Each batch of P21 peptides undergoes rigorous quality testing before leaving the factory, including purity analysis, molecular weight confirmation, and activity testing, ensuring that the product meets international standards.
Our products have passed multiple quality certifications, guaranteeing reliability for laboratory use.
3. Wide Range of Research Applications
Our P21 peptides have wide applications in cell biology, cancer research, anti-aging research, and gene repair. They provide strong support for both basic and preclinical research.
Our products help you delve deeper into potential new directions in cell cycle regulation, DNA repair mechanisms, and cancer treatment.
4. Customized Services
We offer customized P21 peptide services based on your experimental needs, providing P21 peptides in different specifications and concentrations.
We can also provide technical consultation and usage guidance tailored to your specific experimental objectives to ensure smooth experimental execution.
5. Excellent Customer Support
Our professional team provides comprehensive technical support and after-sales service. Whether it's product selection, usage methods, or experimental design, we can provide timely and professional assistance.
We respond quickly to your needs, ensuring timely product delivery and avoiding delays in research progress.
Quality Control
1. Raw Material & Process Control
| Control Stage | Standard | Testing Frequency |
|---|---|---|
| Amino Acid Raw Materials | Optical purity ≥ 99%, single impurity ≤ 0.5% | Per batch |
| Solid-Phase Peptide Synthesis (SPPS) | Intermediate cleavage efficiency monitoring | Per batch |
| Purification Process | Preparative HPLC (Prep-HPLC) | Per batch |
| Lyophilization Process | Residual moisture control | Per batch |
2. Finished Product Release Specifications
| Test Item | Specification | Test Method |
|---|---|---|
| Appearance | White to off-white lyophilized powder | Visual / Olfactory |
| Identification | Molecular weight consistent with theoretical value (e.g., ~579.3) | Mass Spectrometry (MS) |
| Purity | ≥ 99% (by area normalization method) | High Performance Liquid Chromatography (HPLC) |
| Impurity Profile | Single impurity ≤ 0.5%, total impurities ≤ 1.0% | HPLC / Capillary Electrophoresis |
| Peptide Content | ≥ 80% (after deducting moisture/residue) | Nitrogen determination / UV |
| Water Content | ≤ 8.0% | Karl Fischer method |
| Acetate Content | ≤ 1.0% (for acetate salt form) | Ion Chromatography |
| Trifluoroacetic Acid (TFA) | ≤ 1000 ppm | Ion Chromatography |
| Endotoxins | < 5 EU/mg (for injectable grade) / Not required (for cosmetic grade) | LAL test |
| Microbial Limits | TAMC ≤ 100 CFU/g; TYMC ≤ 50 CFU/g | Plate count method |
3. Stability & Storage
| Storage Condition | Temperature | Estimated Shelf Life |
|---|---|---|
| Long-term storage | -20°C ± 5°C | 24 months |
| Short-term transport (with dry ice) | -20°C ~ -80°C | Ensure activity upon reconstitution |
| Accelerated stability | *25°C ± 2°C / 60% RH* | 6 months (per ICH guidelines) |
4.Quality Control Commitment
- Batch Number Management: Each batch of products is assigned a unique batch number, ensuring full traceability.
- Sample Retention and Observation: Double samples are retained from each batch and stored for one year after the expiration date.
- Compliance: The production environment complies with GMP standards (please specify if cGMP level is required).
- Third-Party Verification: Blind sample testing can be conducted by third-party organizations such as SGS and Intertek upon the buyer's request; costs are negotiable.
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