AI Article Synopsis
- Researchers explored how to synthesize quantum dots (QDs) using biomolecular condensates in Escherichia coli, which are membraneless cell compartments.
- They achieved this by overexpressing spider silk protein, allowing it to bind precursor ions and form specific structures, leading to the creation of protein condensates.
- This innovative method not only produced fluorescent QDs but also reduced the harmful effects of precursor heavy metals, suggesting promising applications for nanostructure synthesis inside cells.
Article Abstract
Spatially directed synthesis of quantum dots (QDs) is intriguing yet challenging in organisms, due to the dispersed feature of templating biomolecules and precursors. Whether this task could be accomplished by biomolecular condensates, an emerging type of membraneless compartments in cells remains unknown. Here we report synthetic protein condensates for templated synthesis of QDs in bacterium Escherichia coli. This was realized by overexpression of spider silk protein to bind precursor ions and recruit other necessary components, which induced the spidroin to form more β-sheet structures for assembly and maturation of the protein condensates. This in turn enabled formation and co-localization of the fluorescent QDs to "light up" the condensates, and alleviated cytotoxicity of the precursor heavy metal ions and resulting QDs. Thus, our results suggest a new strategy for nanostructure synthesis and deposition in subcellular compartments with great potential for in situ applications.
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| http://dx.doi.org/10.1002/anie.202214177 | DOI Listing |
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