
Codon usage and functional classification of neural network-defined TISs: (A) Distribution of the number of putative TISs per transcript. (B) Functional classification of putative TISs. (C) TIC usage in putative TISs, either including AUG (upper row) or for near-cognate codons only (bottom row). (D) Average codon frequency over all three reading frames in the analyzed 5′ UTRs, considering either all possible codons (left), the 10 TIS-relevant codons identified in our study only (middle), or near-cognate codons only (right).











