---
title: "Covalent bond: research glossary | Sable Peptides"
description: "A covalent bond is a chemical bond formed by the sharing of electron pairs between atoms. The peptide backbone, side chains and disulfide bridges are held"
canonical: https://www.sablepeptides.co.uk/glossary/covalent-bond
publisher: Sable Peptides Limited (UK company 17488610)
note: Research use only. Not for human or veterinary use.
---

Glossary

# Covalent bond

A covalent bond is a chemical bond formed by the sharing of electron pairs between atoms. The peptide backbone, side chains and disulfide bridges are held together by covalent bonds. Covalent modifications such as acetylation, amidation or lipidation permanently alter a peptide's structure and mass.

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

## Related terms

-   [Peptide](/glossary/peptide)
-   [Amidation](/glossary/amidation)
-   [Acetylation](/glossary/acetylation)
-   [Lipidation](/glossary/lipidation)

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

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