PDBs on a phylogenetic tree

There is a figure of a phylogenetic tree in the Prasad Balla review from 2010 which gives a separation of the different currently known sequences. I have very roughly stitched the tree together from the two parts given on two pages of the review and then I have dropped on top the rough positions of the three most distinct cobalt centred PDB files (1V29, 1UGP and 3QXE) and one of the rhodococcus iron centred files (1AHJ). It is interesting that workers seem to be producing PDB files solely from the right hand half of this tree.