Direct discovery · Biology · Medicine
Claude agents identify array-associated reverse transcriptases in phage genomes
A previously uncharacterized family of phage reverse-transcriptase loci with tandem non-coding repeat arrays and dedicated partner genes.
Summary
An autonomous genome-mining campaign surveyed 1.9 billion protein clusters and surfaced array-associated reverse transcriptases (ARTs), whose loci combine an RT, a partner gene and arrays of roughly 200-nucleotide units. Anthropic's laboratory confirmed that the arrays produce discrete short RNAs during phage infection and in a heterologous construct. The campaign ran 949 agent sessions over 21.5 hours without human intervention before scientists selected and tested the result.
AI role
Claude agents searched metagenomic sequence clusters, classified reverse transcriptases, inspected flanking DNA and autonomously flagged the repeat architecture for human follow-up.
Narrative role
Adds a direct biological-discovery event in which agents noticed an unprescribed anomaly in primary sequence data and generated a candidate system that received targeted laboratory follow-up.
Caveat
The work is a company preprint without independent replication. The experiments establish array transcription, not the ART system's biological function: RT activity, RNA substrates and programmability remain unknown.