Vaults are large, hollow protein shells known for nearly four decades, yet their biological function remains unresolved. On November 4, 2026, Anthropic’s biology team described its investigation of a three-dimensional vault-like structure made from a protein belonging to a virus that infects bacteria.
Where Claude contributed
The researchers selected the protein candidates. Under their direction, Claude helped search sequence databases, prepare DNA designs, refine a particle-isolation method and process microscopy data, according to the team. The researchers produced the particles in laboratory E. coli and examined the structure with cryo-electron microscopy.
The shell studied comprises 96 copies of one protein. The team reports that its isolation method took about 90 minutes and that a first structural model was ready after 34 hours. Its comparison with work that might otherwise take weeks is an estimate, not a controlled benchmark.
The questions still open
The particles’ biological role is unknown, and the team has not yet tested whether they form in the bacteria and viruses where the proteins occur naturally. The researchers submitted a preprint to bioRxiv; the findings should not be presented as peer-reviewed conclusions.
There were setbacks too. The team says an additive in a Claude-written laboratory protocol delayed the project by two weeks. The episode illustrates why faster analysis still needs experimental checks and expert oversight.
