Figure 1 - full size

Figure 1.
Figure 1: Crystal structure of T. thermophilus argonaute bound to a 5'-phosphorylated 21-base DNA guide strand. a, Stick (DNA) and ribbon (Ago) view of the 3.0 Å structure of the complex. Individual domains and linkers are colour-coded. The bound 21-base DNA guide strand is coloured red (with phosphorus atoms in yellow), and can be traced for nucleotides 1 to 11 and 18 to 21, together with phosphates at positions 16 and 17. b, Corresponding stick (DNA) and electrostatically colour-coded surface (Ago) view of the complex. c, An alternate stereo view of the complex from that shown in a. For rotation of c, see Supplementary Movie 2DLH.