Quina et al. 

The supplied supplementary information files are the following:

- Table S1.pdf - detailed distribution of the p53 haplotypes found in M. duodecimcostatus and M. lusitanicus per sampling site in the Iberian Peninsula (country and location);

- Table S2.pdf - list of GenBank accession numbers of the Microtus species used in the analyses;  

- Table S3.pdf - list of GenBank accession numbers of additional mammalian species, including rodents, used in the analyses;

- Table S4.pdf - output from mismatch distribution analysis and neutrality tests for the p53 haplotypes found in M. duodecimcostatus and M. lusitanicus; 

- Table S5.pdf - summary of the results from PAML analyses on p53 exonic sequences of Microtus, rodent and mammalian lineages;

- Figure S1.pdf - mismatch distributions of p53 haplotypes found in M. duodecimcostatus and M. lusitanicus according to the sudden-expansion model;

- Figure S2.pdf - Median-joining network of p53 haplotypes found in M. duodecimcostatus and M. lusitanicus, with segment of extra repeat motifs in intron 6 removed from the aligned sequences.