Figure 3From: Evolutionary history of the poly(ADP-ribose) polymerase gene family in eukaryotesPhylogenetic analysis of Clade 1 PARP genes. The represented tree is a ML tree. This tree is based on a multiple alignment that includes the PARP catalytic domain (Additional file 5). Clade 1 proteins can be divided into nine subclades A-I, as indicated. Branch supports as in Figure 1. Scale bar indicates genetic distance reflected in branch length.Back to article page