Figure 4From: Cloning and characterization of two Argonaute genes in wheat (Triticum aestivum L.)Alignment of PIWI domains in plant AGOs. Conserved Asp, Asp, and His (DDH) triad residues are marked with downward arrows. The H798 site of AtAGO1 is indicated by box. Amino acid positions for each PIWI domain are numberedBack to article page