Anthropic's biology team says that with Claude involved at every step, the team solved the first structure of a prokaryotic vault particle in four months and cut one purification step from three days to 90 minutes.

Concept illustration: a large sheet hangs from a black rail, lettered ANTHROPIC beside a black angular mark at top right, and on a long black bench across it stand two matching lab setups, each a conical flask joined by a tube to a funnel clamped on a stand above a bottle; on the left the flask and funnel hold grey liquid and a drop falls from the funnel tip toward a clear bottle, while on the right the flask and funnel are clear and the bottle holds red liquid. At the right end of the bench is a black laptop-like panel lettered CLAUDE, with a speech bubble containing three grey lines above it. Printed on the image: 3 days→90min One purification step, Anthropic team's estimate.

The account comes only from Anthropic and concerns Anthropic's own model. The time savings are the team's estimates, and the preprint has not been peer reviewed. Vault particles are large hollow protein shells, present in almost every human cell, whose function is still unknown. The team writes that Claude searched about 15 billion predicted proteins for relatives and picked 44 proteins to test. Anthropic reports that of the 24 moved into E. coli for testing, 15 produced soluble protein, 7 assembled into vault-like particles and cryo-electron microscopy confirmed 4. Purification fell from three days to about 90 minutes, and the first structural model took 34 hours, against what the team estimates would have been weeks. The same post says Claude once got a growth-medium recipe wrong, costing two weeks (Anthropic, 2026-11-04). How we checked →

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This item ran in the brief of Nov 5, 2026, alongside 13 other items. How we checked it, the quote checks and what was still missing that day are on that issue's How we checked page.

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SecondSource (2026). "Anthropic's biology team says that with Claude involved at every step, the team solved the first structure of a prokaryotic vault particle in four months and cut one purification step from three days to 90 minutes.." https://secondsource.io/en/research/2026-11-05-1/. Accessed access date.