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Figure 2
Recognition of the A1 and T0 positions by AvrBs3. (a) The initial HD dipeptide associated with the first adenine in the target sequence. Asp301 forms a hydrogen bond to the amino group of the base. (b) The interactions of T0 with the N-terminal region of AvrBs3. The phosphate of the nucleotide interacts with Thr270, Gln305 and Gly268 through hydrogen bonds. (c) Detailed view of T0 interacting with Arg236 and Arg266 through nonpolar van der Waals interactions. The map in all of the figures is a 2FoFc σA-weighted map contoured at 1.0σ. (d) Superposition of the PthXo1 (purple; PDB entry 3ugm; Mak et al., 2012BB14), dHax3 (yellow; PDB entry 3v6t; Deng et al., 2012BB9) and AvrBs3 (orange) protein structures. The DNA moiety is omitted for clarity. Differences among the three TALE structures in the N-terminal region (including the 0 and −1 repeats) can be observed (see Results and discussion[link] and Supplementary Fig. S5).

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ISSN: 2059-7983
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