Proteins · one protein

ACE2

UniProt Q9BYF1 · 805 residues

AlphaFold's confidence, residue by residue: 629 very high (90 and above) · 113 confident (70 to 90) · 24 low (50 to 70) · 39 very low (below 50).

Ask this protein

• What does it look like? 805 residues: 78% very high confidence, 5% very low.
• Where could a drug bind?
• Can I print it and fill it in by hand?

The next questions its numbers invite

• Does a confident model mean it never moves? 629 of its 805 residues are at pLDDT 90 or above.
• Could it be more than one piece, and how sure are they of each other? It is 805 residues long; long chains are often built from domains.
• What does a single-chain model leave out? Every AlphaFold DB entry is one chain on its own: no partners, metals or cofactors.

These follow-ups come from a short hand-written table that reads only the numbers above: many residues below 50 invites the disorder games; most at 90 or above invites the one about movement. They are questions to try, not findings about this protein.

AlphaFold DB model v6 for UniProt Q9BYF1, from Fold Commons' snapshot of 2026-10-04. A prediction, not an experiment.