Comparison of peroxiredoxin Q amino acid sequences. A: Amino acid sequence alignment of the here analyzed PrxQ from Arabidopsis thaliana (At), Selaginella moellendorffii (Sm), Physcomitrella patens (Pp) and Chlamydomonas reinhardtii (Cr). B: Phylogramme of the PrxQ sequences shown in Fig. 8A (red) and putative full-length PrxQ sequences of chlorobiont and cyanobacterial origin as listed in PeroxiBase . The tree was calculated based on the neighborhood joining algorithm. The numbers represent bootstrap values. Maximum parsimony and minimum evolution trees are shown in the additional files 5 and 6.