Fig. 9From: Selective forces and mutational biases drive stop codon usage in the human genome: a comparison with sense codon usageThe GC content of mRNA regions surrounding the stop site. GC content of region I (RI), II (RII), and III (RIII) in mRNAs containing UAA, UAG, UGA, and in highly transcribed (HTG), housekeeping (HKG), and ribosomal protein (RPG) genes. Sequences are 50 nucleotides long. RI contains the coding sequence flanking the 5’ end of the stop codon (stop codon not included), RII is centred on the stop codon, and region RIII is the 3’-UTR sequence flanking the stop codon (stop codon not included). Values represent mean ± SEMBack to article page