Cells can tailor their growth to current conditions by sensing nutrients. The protein complex mTORC1 enables cell growth to be coordinated with the level of certain amino acids, and how it senses the ...
The genetic code is central to life. With minor variations, everything uses the same sets of three DNA bases to encode the same 20 amino acids. We have discovered no major exceptions to this, leading ...
I wonder if the pre-LUCA ribosome itself might have been radically different before we fixed on 20 amino acids? Obviously the protein scaffolding would be different, but also it could afford to be a ...
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