Proteins · one protein

SARS-CoV-2 spike

UniProt P0DTC2 · 1273 residues

AlphaFold's confidence, residue by residue: 85 very high (90 and above) · 627 confident (70 to 90) · 257 low (50 to 70) · 304 very low (below 50).

Ask this protein

• What does it look like? 1273 residues: 7% very high confidence, 24% very low.
• Where could a drug bind?
• Can I print it and fill it in by hand?

The next questions its numbers invite

• Is that floppy bit broken or working? 304 of its 1273 residues are below pLDDT 50.
• Where should it be drawn sketchy? 304 of its 1273 residues are below pLDDT 50.
• Could it be more than one piece, and how sure are they of each other? It is 1273 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 v1 for UniProt P0DTC2, from Fold Commons' snapshot of 2026-10-04. A prediction, not an experiment.