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  "path": "/article/scientists-use-ai-to-test-whether-life-can-run-on-only-19-amino-acids/",
  "publishedAt": "2026-04-30T18:00:00.000Z",
  "site": "https://www.scientificamerican.com",
  "textContent": "An engineered _E. coli_ strain survived after one amino acid was designed out of many of its ribosomal proteins—an early test of whether life’s chemistry can be simplified",
  "title": "Scientists use AI to test whether life can run on only 19 amino acids"
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