Anthropic’s AI system Claude has identified a previously uncharacterised enzyme system in bacteriophages that contains DNA repeat patterns resembling those associated with CRISPR. The company said the finding could eventually point towards a new gene-editing mechanism, although researchers do not yet know exactly what the newly identified system does or whether it will have a practical biotechnology application.
Anthropic CEO Dario Amodei announced the finding on September 23, describing it as an early result from the company’s new life sciences research programme and laboratory. The discovery involved a molecular system that Anthropic has named array-associated reverse transcriptases (ARTs).
CRISPR, short for clustered regularly interspaced short palindromic repeats, is a natural biological system that has become an important tool for targeted gene editing. Anthropic said the newly identified ART system shares some characteristics with other programmable biological systems that can perform DNA-related operations.
How Claude Identified the New Biological System
Anthropic said its researchers initially gave Claude a broad task to search a large database of DNA sequences for potentially interesting examples of reverse transcriptases. These enzymes are capable of copying RNA into DNA.
Claude agents examined more than 200,000 reverse transcriptases, identified around 3,500 candidate systems and eventually narrowed the search to 20 of the most promising candidates for detailed analysis. Anthropic said the process involved roughly 950 agents and 210 million tokens over about 21 hours.
During this analysis, Claude detected an unusual reverse transcriptase family and examined the DNA surrounding its gene. It identified a long sequence of repeated DNA elements positioned next to the enzyme’s gene, a pattern that had not previously been recognised as part of the system.
Further analysis indicated that the system contains three main components: a reverse transcriptase, a neighbouring partner gene and a long array of regularly spaced DNA repeats. Anthropic said the arrangement resembles a CRISPR array. Initial laboratory experiments also found that the ART array is expressed as a collection of short RNA molecules.
What Researchers Know About ART So Far
The reverse transcriptase underlying the system had been identified in earlier research in a jumbo bacteriophage. However, Anthropic said Claude was apparently the first to identify the broader combination of features that defines the ART system, including the associated non-coding DNA repeat array and an additional protein whose function remains unknown.
Researchers are still working to determine how ART operates. Anthropic has stressed that the discovery should be viewed as an early finding rather than a completed gene-editing technology.
The company’s researchers said that only a small number of known biological systems share the relevant combination of characteristics, and those systems are capable of programmable DNA operations such as cutting, copying and pasting DNA. The potential significance of ART will depend on what further laboratory experiments reveal.
AI and Human Scientists Working Together
Anthropic described the project as an example of collaboration between AI systems and human researchers. The company’s scientists provided the initial research direction and carried out laboratory work, while Claude agents searched genomic data, compared candidates, reviewed scientific literature and generated hypotheses for further investigation.
Amodei said this type of workflow could eventually make it possible to examine biological datasets at a scale that would be difficult for individual researchers to handle manually. He also suggested that AI-assisted biology could accelerate the process of identifying potential drug targets, therapeutic approaches and other useful biological mechanisms.
However, Anthropic’s current work still depends on human scientists to review candidates and conduct physical experiments. The company said its laboratory team tests promising discoveries by producing the relevant proteins and examining their biochemical and structural characteristics, with Claude also helping interpret the resulting data.
What the Discovery Could Mean for Biology
Anthropic said the ART finding is an early demonstration of how AI-driven hypothesis generation could contribute to biological research. The company hopes the approach can be extended beyond this particular enzyme system to other questions in genomics and related scientific fields.
The company is also making the findings available at an early stage so other researchers can examine the work and investigate the system further. Anthropic said additional experiments are underway to establish ART’s primary function and determine whether its unusual structure can eventually be developed into a useful biotechnology tool.
For now, the precise biological role of ART remains unresolved. The significance of the discovery will depend on subsequent laboratory research and whether scientists can establish a practical use for the system.
Disclaimer: This article is based on information released by Anthropic and reports about its research. The newly identified ART system is still under investigation, and its exact function, potential applications and broader scientific significance have not yet been established. This article is intended for informational purposes and should not be treated as medical or scientific advice.