Figure 2

Prediction of the non-synonymous to synonymous substitution rates ratio ( ω ) for individual sites of NORK. Sites are numbered with respect to the reference sequence of Medicago truncatula A17 (accession number CAD10809). INS: with respect to this reference sequence, two sites have been inserted between sites 240 and 241 and are not numbered in this figure. GAP: the positions 330 to 342 are missing and the numbering jumps from 329 to 343. The dotted line represents ω = 1. Arrowheads: candidate sites for positive selection. Shaded frames: LRRs (solvent-exposed β sheets are marked by darker frames).