Mutations in the <i>mucA</i> gene of mucoid isolates from strains MPA, MPA-T1, MPA-T2 and MPA-T3.

a<p>ΔG at 426 corresponds to a −1 bp deletion within G⁵SSR₄₂₆; ΔC at 362 corresponds to a −1 bp deletion within a mononucleotide SSR of four Cs from 362 to 365 (C⁴SSR₃₆₂); ΔC at 431 corresponds to a −1 bp deletion within C⁶SSR₄₃₁. “None” refers to conversion to mucoidy occurring in the absence of <i>mucA</i> mutations. The nature of these non-<i>mucA</i> alterations leading to a mucoid phenotype was not investigated in this work.</p>b<p>Stop codon produced at the site of the mutation by substitutions or placed in frame by frameshift mutations.