Anthropic
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AnthropicClaudeBiologyAgentsScienceClaude agents discover CRISPR-like enzyme system in bacteriophage DNA
September 23, 20262 min read
Anthropic’s new life-sciences lab reported that roughly 950 Claude agents, running for 21 hours and consuming 210 million tokens, identified a previously uncharacterized enzyme system in bacteriophages called ART (array-associated reverse transcriptases). The system has CRISPR-like DNA repeats; its function is still unknown.
Why it matters
First concrete result from Anthropic’s wet lab. Agents did the search and pattern recognition largely unattended; humans handled initial prompt and lab confirmation. It is an early signal of how frontier models can accelerate biological hypothesis generation — and of the dual-use questions that follow.
Anthropic announced that Claude agents identified a previously uncharacterized enzyme system in bacteriophage DNA, the first result from its new life-sciences research group and wet laboratory.
Roughly 950 Claude agents ran for about 21 hours and consumed 210 million tokens while searching DNA-sequence data for interesting reverse transcriptases. One agent noticed a tandem repeat array next to an unusual reverse-transcriptase gene and flagged it for human review. Lab work confirmed the system, which Anthropic calls array-associated reverse transcriptases (ART). It consists of a reverse transcriptase, a neighboring partner gene, and a long array of evenly spaced DNA repeats — an architecture reminiscent of CRISPR.
The underlying reverse transcriptase had appeared in earlier studies; Anthropic says Claude was the first to connect the enzyme, the non-coding array, and an accessory protein of unknown function into a coherent system. Early experiments show the array is expressed as distinct short RNAs. The biological function of ART remains unknown and awaits broader scientific validation. Anthropic notes that a Stanford team had previously described a system that is in some ways similar.