Anthropic says Claude identified previously unnoticed features of a system in bacteriophages—the viruses that infect bacteria. The team calls it ART: array-associated reverse transcriptases.
What is new?
The enzyme itself was already known. Anthropic credits Claude with noticing a nearby repeating DNA array and an accessory protein that define the system. [1]
Why mention CRISPR?
The repeat pattern resembles CRISPR arrays. Early laboratory work found that the array is expressed as short RNAs. That resemblance is a research clue; it does not establish a gene-editing capability. [1]
What remains unknown?
The system’s function is unknown. The findings were released as a preprint, without peer review. The Next Web reports that the researchers have not yet demonstrated the enzyme’s activity or shown that it acts on those RNAs. [2]
Episode script
Claude found a new enzyme system in virus DNA, Anthropic says. The enzyme was known, but Claude appears the first to spot two features: a DNA repeat array and an accessory protein.
Anthropic calls it ART. Its DNA-repeat pattern resembles CRISPR, but its function is unknown. The unreviewed preprint shows the array is expressed as RNA, yet the enzyme hasn't been shown active.
Sources
- Anthropic — Claude discovers a novel enzyme system with CRISPR-like repeats ↗
23 September 2026. Primary announcement, with a link to the technical preprint. The organisation making the discovery claim is also the model developer.
- The Next Web — Anthropic says Claude found a new enzyme system with CRISPR-like repeats ↗
23 September 2026. Reporting on the announcement and the preprint’s limitations; not independent experimental replication.
How this episode was made
The project uses two locally generated presenter clips in ComfyUI to make a 30-second Short. The presenter is AI-generated. The script was researched with AI tools and reviewed and approved by Barry Greaves.
Transparency: Rogue Signal uses Claude, made by Anthropic—the subject of this story—and ChatGPT.
Explore the production project ↗