Scientists Used A.I. to Redesign a Microbe's Machinery to Function Without a Key Ingredient of Life

Sara Hashemi· May 27, 2026 · 3:46 PM UTC ·4 min read · 0 reactions · 0 comments · 41 views

#synthetic biology #artificial intelligence #microbiology

TL;DR · WeSearch summary

Researchers have utilized artificial intelligence to redesign a bacterium's machinery to function without a crucial amino acid. This significant advancement in synthetic biology offers insights into how early life on Earth may have existed. Although the study did not create a fully functional cell with fewer amino acids, it marks an important step in understanding the fundamental building blocks of life.

Key facts

▪The study focused on the bacterium Escherichia coli and aimed to remove isoleucine from its proteins.
▪Using AI, researchers successfully created a version of the bacterium that could function with 21 ribosomal proteins lacking isoleucine.
▪The modified strain, called Ec19, maintained its genetic changes over 450 generations.

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Smithsonian Magazine files mainly under science. We currently carry 112 of its stories.

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Smithsonian Magazine · Sara Hashemi

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Original publisher	Smithsonian Magazine
Canonical URL	https://www.smithsonianmag.com/smart-news/scientists-used-ai-to-redesign-a-microbes-machinery-to-function-without-a-key-ingredient-of-life-180988802/
Publication time	Wed, 27 May 2026 15:46:47 +0000
Retrieval time	2026-05-27T15:58:01.753Z
Last seen	2026-05-27T15:58:01.753Z
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Opening excerpt (first ~120 words) tap to expand

Scientists Used A.I. to Redesign a Microbe’s Machinery to Function Without a Key Ingredient of Life Although the researchers did not create an entire cell that could function without a crucial building block, the findings represent a big step in synthetic biology and provide a glimpse at how Earth’s earliest organisms may have lived Sara Hashemi | Daily Correspondent May 27, 2026 11:46 a.m. ShareCopy linkEmailSMSFacebookXRedditLinkedInBlueskyPrintAdd as preferred source Scientists carried out their experiments in the bacterium Escherichia coli. Cells of the species are artificially colored blue in this microscope image.

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