Proteomes across cellular domains and viral realms exhibit consistent elemental composition that matches LUCA reconstructions but not those from reduced primordial amino acid alphabets.
Furthermore, thousands of amino acids are theoretically possible based on structural exploration of chemical space (Ilardo et al
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Deep-time consistency in proteome elemental composition across cellular and viral life
Proteomes across cellular domains and viral realms exhibit consistent elemental composition that matches LUCA reconstructions but not those from reduced primordial amino acid alphabets.