---
title: "Peptide: research glossary | Sable Peptides"
description: "A peptide is a short chain of amino acids joined by amide (peptide) bonds. Chains of roughly 2 to 50 residues are usually called peptides, while longer cha"
canonical: https://www.sablepeptides.co.uk/glossary/peptide
publisher: Sable Peptides Limited (UK company 17488610)
note: Research use only. Not for human or veterinary use.
---

Glossary

# Peptide

A peptide is a short chain of amino acids joined by amide (peptide) bonds. Chains of roughly 2 to 50 residues are usually called peptides, while longer chains are described as polypeptides or proteins. Peptides are written from the N-terminus to the C-terminus and can be linear, cyclic, or chemically modified for research purposes.

Source: [en.wikipedia.org](https://en.wikipedia.org/wiki/Peptide)

## Related terms

-   [N-terminus](/glossary/n-terminus)
-   [C-terminus](/glossary/c-terminus)

[Back to glossary A–Z](/glossary/terms)

All Sable Peptides products are supplied for laboratory research use only. Not for consumption.