Fold Commons

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Pepsin

Pepsin works in your stomach where the acid is strong. It starts breaking down protein in food right away.

Pepsin: its AlphaFold model, drawn in one colour
Picture, in one colour: AlphaFold DB model v6 for UniProt P0DJD7, from Fold Commons' snapshot of 2026-10-22. A prediction, not an experiment.

See it in 3D

Fun fact

Most proteins fall apart in stomach acid. Pepsin keeps working in it.

Words to know

NGSS alignment

Structure

Rendered in FoldLens Junior from AlphaFold Database entry P0DJD7. See the underlying prediction at alphafold.ebi.ac.uk/entry/P0DJD7.

For teachers and platforms

This page is the canonical share URL for the FoldLens Junior Pepsin entry. Educational platforms can embed it via the standard OEmbed protocol — the discovery link is in the page head, the JSON body is at /junior/oembed/pepsin.json, and the query endpoint at /junior/oembed?url=…&format=json redirects to the same body.