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Claude discovers a novel enzyme system with CRISPR-like repeats

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Screenshot of Claude discovers a novel enzyme system with CRISPR-like repeats

A new Anthropic life‑sciences group built an integrated AI-human research workflow and laboratory to mine huge DNA databases for uncharacterized protein systems. Using Claude agents, the team scanned sequence data at scale (roughly 950 agents, 210 million tokens, ~21 hours), collected over 200,000 reverse transcriptases (RTs), generated ~3,500 candidate systems and distilled those to the top 20 human‑readable reports for expert review and lab testing. Human scientists performed BSL‑1/2 bench work guided by Claude Science and Claude Code; the group iteratively trains the model on what kinds of hypotheses are worth following, then validates biochemical and structural properties experimentally.

The autonomous analysis identified a previously unrecognized bacteriophage system composed of a reverse transcriptase, an adjacent accessory gene, and a long, evenly spaced array of noncoding repeats. The repeat array resembles CRISPR-like repeat banks and is transcribed into distinct short RNAs; the team named the system ART (array‑associated reverse transcriptases). ARTs combine features that, in other systems, enable programmable operations on DNA - cutting, copying and pasting - although the precise mechanism remains to be determined. Early biochemical and genomic evidence supports ART as a novel, potentially programmable enzyme system; further experiments and a technical preprint document the findings and invite broader scientific follow-up.

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