Anthropic’s Claude Identifies New DNA-Editing System in Bacteriophage DNA

Further experiments and independent research will be needed to determine its biological significance and potential applications.

Anthropic has reported that its Claude AI model helped identify a previously unknown enzyme system in bacteriophage DNA, marking an early result from the company’s new biology research programme.

The system, called array-associated reverse transcriptases (ART), has features that resemble parts of CRISPR, although its function is still being investigated.

Anthropic’s new biology effort builds on the growing use of AI for genomic analysis and molecular research. The company established a wet biology laboratory in the San Francisco Bay Area earlier this year, bringing computational analysis together with laboratory experiments conducted by human scientists.

The lab currently operates at BSL-1 and BSL-2 levels and does not handle pathogens capable of infecting humans.

For the reported discovery, Claude agents searched large collections of DNA sequences for unusual reverse transcriptases (RTs), enzymes that can copy RNA into DNA.

Anthropic says the system examined more than 200,000 RTs, identified about 3,500 candidate systems and narrowed these down to 20 for closer analysis.

The process took about 21 hours and involved roughly 950 Claude agents processing around 210 million tokens.

The ART system consists of an RT, a neighbouring partner gene and a long sequence of repeated DNA elements. Anthropic says the arrangement was unusual because the repeat pattern resembled a CRISPR array.

Initial laboratory experiments also indicated that the repeat region is expressed as distinct short RNAs, although researchers have not yet established the system’s primary biological function.

CRISPR itself originated as a bacterial defence mechanism against invading viruses and was later adapted by scientists into a powerful gene-editing technology.

Anthropic has stressed that ART is not CRISPR, and the company has not established that the newly identified system can function as a programmable gene-editing tool.

Further experiments and independent research will be needed to determine its biological significance and potential applications.

CRISPR researcher Feng Zhang, after reviewing Anthropic’s preprint, described the identification of RNA-repeat arrays associated with reverse transcriptases as “genuinely intriguing” and said it merits further investigation.

Anthropic has also acknowledged that its work builds on previous research, including studies of related biological systems.

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