---
title: "Phenylalanine: research glossary | Sable Peptides"
description: "Phenylalanine (three-letter code Phe, one-letter code F) is an aromatic amino acid with a benzyl side chain. It is hydrophobic and absorbs weakly in the ul"
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publisher: Sable Peptides Limited (UK company 17488610)
note: Research use only. Not for human or veterinary use.
---

Glossary

# Phenylalanine

Phenylalanine (three-letter code Phe, one-letter code F) is an aromatic amino acid with a benzyl side chain. It is hydrophobic and absorbs weakly in the ultraviolet near 257 nm. Phenylalanine residues often participate in hydrophobic and aromatic stacking interactions at peptide-receptor interfaces.

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

## Related terms

-   [Peptide](/glossary/peptide)
-   [Amino acid](/glossary/amino-acid)
-   [One-letter code](/glossary/one-letter-code)
-   [Receptor](/glossary/receptor)

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