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  "path": "/articles/d41586-026-01396-w",
  "publishedAt": "2026-05-01T07:55:35.151Z",
  "site": "https://www.nature.com",
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  "textContent": "Nature, Published online: 30 April 2026; doi:10.1038/d41586-026-01396-w\n\nAI-guided redesign of protein alphabet in bacteria could unlock new ways to build synthetic organisms.",
  "title": "All life runs on 20 amino acids. These cells run key machinery on just 19",
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