Peptide glossary · Basics
Peptide bond
The amide bond between the carboxyl group of one amino acid and the amino group of the next. It forms with the loss of water. The peptide bond absorbs UV light around 214 nm, which makes HPLC detection of peptides possible.
In the lab
The peptide bond is fairly stable but can slowly hydrolyse in solution, especially at extreme pH and when warm. That is why peptides are stored dry and solutions frozen.
More terms: Basics
- Amino acidThe building block of peptides and proteins.
- Oligopeptide and polypeptideOligopeptides consist of a few amino acids, usually up to about ten.
- PeptideA chain of amino acids joined by peptide bonds.
- Peptide hormoneA hormone made of an amino acid chain, such as GLP-1, GHRH or oxytocin.
- ProteinA long amino acid chain, usually more than 50 residues, that folds into a defined three-dimensional structure.
- Research peptideA peptide made and sold for laboratory research, for example in vitro experiments.
For laboratory research use only. Not for use in humans or animals.