Anthropic said on September 23, 2026, that Claude agents had identified a previously uncharacterized enzyme system it calls array-associated reverse transcriptases (ART). The company describes ART as a system found mainly in bacteriophages, viruses that infect bacteria; its biological function was unknown when Anthropic announced the finding.
What Anthropic describes as ART
Anthropic says ART combines a reverse transcriptase, a neighboring partner gene and a long array of evenly spaced DNA repeats. A reverse transcriptase is an enzyme that copies RNA into DNA. The enzyme itself had been identified in earlier studies; Anthropic says the associated repeat array and partner gene were the features Claude flagged together.
The name refers to the repeat array associated with the enzyme system. Anthropic’s first experiments found that the array was expressed as distinct short RNAs. That observation describes RNA expression; it does not establish that ART edits genes or has a therapeutic use.
The reported search and human lab work
Anthropic said roughly 950 Claude agents searched for 21 hours, using 210 million tokens. The company says the agents gathered more than 200,000 reverse transcriptases, identified 3,500 candidate systems and narrowed those to 20 candidates for detailed reports.
In Anthropic’s account, Claude searched sequence databases, flagged candidates and helped analyze data. Human scientists reviewed candidates and carried out the laboratory work. The company’s video presents its molecular biology lab and shows researchers working there.
What the first experiment found
The reported short-RNA expression is an initial experimental observation, not a demonstrated biological function. Anthropic said further experiments were underway to determine ART’s primary role. The company’s announcement did not establish ART as a gene-editing tool or a therapy.
Anthropic said it formed a life-sciences research group in spring 2026 to investigate whether AI models could help systematize and accelerate biological discovery. NeoTeo previously covered Anthropic’s biology lab and its exploration of supervised laboratory robotics.
