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Peptide Guide
What Are Peptides?
Peptides are short chains of amino acids linked by peptide bonds. They typically consist of 2-50 amino acids, distinguishing them from larger proteins. Peptides play crucial roles in biological processes, acting as signaling molecules, hormones, and regulators of various physiological functions.
Research peptides are synthesized versions of naturally occurring peptides or novel sequences designed for scientific investigation. They are used to study biological mechanisms, receptor interactions, and potential therapeutic applications.
Key Terms
- Lyophilized (Freeze-Dried)
- Peptides are supplied as a dry powder created by freeze-drying. This form maximizes stability and shelf life.
- HPLC Purity
- High-Performance Liquid Chromatography is the gold standard for measuring peptide purity. ≥99% indicates research-grade quality.
- Molecular Weight (MW)
- The mass of one mole of the peptide, used to convert between mass and molar concentration in analytical work.
- CAS Number
- A unique identifier assigned by the Chemical Abstracts Service, used to unambiguously reference a compound across the literature.
- COA (Certificate of Analysis)
- A document from an independent laboratory verifying the identity, purity, and quality of a peptide batch.
Handling Best Practices
- Always work in a clean laboratory environment to prevent contamination
- Allow vials to reach room temperature before opening
- Avoid shaking peptide solutions vigorously – gentle swirling is preferred
- Store according to product specifications (see Storage Guide)
- Keep peptides away from direct light and heat
Further Reading
- PubMed – Search peer-reviewed research literature
- PMC (PubMed Central) – Free full-text research articles
- ClinicalTrials.gov – Database of clinical studies