The PTEN domain of plant class II formins, stramenopile formins and selected "standalone" PTENs. Alignment of the central part of selected PTEN domains representing land plant Class II formins, PTEN-associated formins of prasinophytes and stramenopiles, and standalone PTENS from a range of eukaryotes (see Additional files 1 and 7 for sequence description and the color key in the figure for classification). Sequences are colored by residue type using the standard BioEdit coloring scheme. Positions conserved across all standalone PTENs are in bold, those shared by all Class II formins are on a gray background. The catalytic site consensus is inverted (white on coloured backgtround).