Properties of the variable regions of Fv1.

<p>Proteins corresponding to the Fv1SPR1, Fv1CAR1 and Fv1<sup>nr</sup> alleles are illustrated. Shaded positions indicate amino acids showing positive selection <a href="http://www.plospathogens.org/article/info:doi/10.1371/journal.ppat.1003968#ppat.1003968-Yan1" target="_blank">[40]</a>, residues in triangles have been implicated in restriction specificity (this paper, <a href="http://www.plospathogens.org/article/info:doi/10.1371/journal.ppat.1003968#ppat.1003968-Stevens1" target="_blank">[16]</a>, <a href="http://www.plospathogens.org/article/info:doi/10.1371/journal.ppat.1003968#ppat.1003968-Bishop2" target="_blank">[48]</a>).</p>