Core Peptide Science Terms
This section defines foundational peptide terminology commonly used in biochemical and laboratory research.
- Peptide
- A short chain of amino acids linked by peptide bonds that participate in signaling, structural support, and biological regulation.
- Amino Acid
- Organic molecules that form peptides and proteins; each contributes unique chemical properties.
- Peptide Bond
- A covalent linkage between two amino acids forming the backbone of peptide chains.
- Polypeptide
- A long chain of amino acids that may fold into functional proteins or remain as active fragments.
- Protein
- Large biological molecules composed of polypeptides responsible for structural, enzymatic, and regulatory functions.
- Peptide Sequence
- The exact order of amino acids in a peptide, determining its stability and biological activity.
- Peptide Chain
- A linear arrangement of amino acids joined by peptide bonds.
- Peptide Fragment
- A portion of a larger protein or peptide studied to isolate specific effects.
- Peptide Analog
- A modified peptide with structural changes to alter stability, receptor affinity, or experimental behavior.
- Peptide Derivative
- A chemically altered peptide designed to improve research suitability.
- Peptide Modulator
- A peptide that influences receptor activity or signaling pathways.
- Peptide Ligand
- A peptide that binds to a receptor to trigger or regulate cellular responses.
- Endogenous Peptide
- A peptide naturally produced within the body.
- Exogenous Peptide
- A peptide introduced from outside the body for laboratory research.
- Synthetic Peptide
- A lab-made peptide produced through chemical synthesis.
- Linear Peptide
- A peptide with an uncyclized backbone structure.
- Cyclic Peptide
- A peptide whose ends are chemically linked, forming a ring that enhances stability.
- Micropeptide
- A very small peptide, typically under 10 amino acids, with potent signaling potential.
- Bioactive Peptide
- A peptide that exhibits measurable biological activity.
- Recombinant Peptide
- A peptide produced via genetic engineering technologies.