It should be noted that in Prunus spinosa two S-RNase alleles that differ in only one amino acid position identified as being under positive selection have been found in the same individual [ 11].
Seven sites had a posterior probability of being under positive selection greater than 0.95, at positions 224, 231, 266, 339, 398, 432, and 521 (numbered based on Zea mays sequence, AY271262).
In addition, 18 amino acid positions have been identified as being under positive selection by comparing 357 viruses isolated from 1984 to 1996 (7).
We observe a large departure from this expectation, with the likelihood of being under positive selection decreasing with increasing distance from other selected sites.
The only site identified as being under positive selection was again the isoleucine, now in position 182 because of the gaps included in the analysis.
Position 235 has a high probability (0.933) of being under positive selection as well.
One position in subunit θ (274) was consistently identified as being under positive selection by different models.
In FBN8 sites 34 and 72 were identified by the BEB method as possibly being under positive selection.
Thus, the behaviors that produce them will be treated as if being under positive selection in our models, just as would those that improve its personal centrality.
The posterior probability for each codon site of being under positive selection was calculated by the conservative Empirical Bayes approach [59].
We used spinach Rubisco protein structure [24] to infer the possible effect(s) of mutations at the residues identified as being under positive selection in Schiedea.
