Frame-shifted proteins of a given gene are unlikely to retain the same function

None of the mutations claimed to lead to the production of the alternative frame products prevent the translation of the 0-frame protein. The coding sequences are shown in red with the wild-type start codon in bold. The upstream sequences are in black with the putative Shine-Dalgarno sequences shown in bold characters. Nucleotide deletions are shown by dashes. Putative translation start sites in 0-frame are indicated by arrows.