Table 1.

Summary statistics used in the multivariate analysis

^aNumber of amino acids in the D. melanogaster protein.

^bPercentage of the D. melanogaster codons used for the ω estimations (the rest represent positions poorly alignable or with alignment gaps).

^cThe d_N and d_S values correspond to the sums across all branches of the melanogaster group phylogeny.

^dNumber of PPIs involving each D. melanogaster protein.

^emRNA signal level in D. melanogaster adults (Chintapalli et al. 2007).

^fParalogous genes encoding the eukaryotic initiation factor 4E (eIF4E).