Figure 2: Distribution of mod genes and alleles.

(a) Venn diagram of the distribution of mod genes in the dataset. (b–d) Pie charts of mod alleles (and allele variations) with the number of isolates containing each allele shown in brackets. (b) modA alleles 2, 4, 6, 11, 12, 15, 18, 19 are shown, as well as the A11 5′-AGTC-3 repeat variant, and the A11 and A12 15bp C-terminal deletion variants (NB. For 2 modA11 and 2 modA12 alleles it was unclear from whole genome sequences whether they were full length or had the C-terminal deletion, and these are indicated with a question mark ‘?’). (c) modB alleles 1–6 are shown, as well as the B1 and B2 5´-CCCAA-3´ and 5´-GCCAA-3´ repeat variants (NB. The repeat region could not be categorized for 3 modB1 alleles, and these are indicated with a question mark ‘?’). (d) modD alleles 1–7 are shown.