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Anthropic’s Claude Identifies CRISPR‑Like System in Phage DNA

Anthropic says its AI found a new ART system with repeat arrays that are transcribed into short RNAs, leaving its function and utility unproven

Overview

  • Anthropic published a preprint Wednesday saying about 950 Claude agents worked for roughly 21 hours, processing ~210 million tokens to mine public genomic databases and flag a previously uncharacterized system called ART.
  • Anthropic defines ART (array‑associated reverse transcriptases) as a three-part unit: a reverse transcriptase enzyme, an adjacent accessory gene, and a long array of evenly spaced noncoding DNA repeats that resemble CRISPR arrays.
  • Researchers in Anthropic’s Bay Area BSL‑1/2 wet lab performed follow-up experiments that show the ART repeat arrays are transcribed into distinct short RNAs, a preliminary result the company released for community review.
  • The company stresses the finding is early and unpeer‑reviewed; external experts including CRISPR pioneer Feng Zhang called the result 'genuinely intriguing' and a separate Stanford team has reported a related but distinct system.
  • If verified, ART could point to a new programmable mechanism for DNA manipulation, yet practical applications are speculative for now and Anthropic says further experiments and peer review are underway under human oversight.