---
title: "Amino acid: research glossary | Sable Peptides"
description: "An amino acid is an organic molecule containing an amine group and a carboxylic acid group attached to a central carbon that also carries a variable side c"
canonical: https://www.sablepeptides.co.uk/glossary/amino-acid
publisher: Sable Peptides Limited (UK company 17488610)
note: Research use only. Not for human or veterinary use.
---

Glossary

# Amino acid

An amino acid is an organic molecule containing an amine group and a carboxylic acid group attached to a central carbon that also carries a variable side chain. Twenty standard amino acids are encoded by the genetic code. Their side chains differ in size, charge and polarity, which determines how a peptide folds, dissolves and behaves analytically.

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

## Related terms

-   [Peptide](/glossary/peptide)

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

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