Table 3.

Mean sequence properties of successful and unsuccessful Pfam protein sets.

Sequence property	F = −2 sets				F = 0 sets
	aviral proteins	bmost successful	bleast successful	P-valuec	bmost successful	bleast successful	P-valuec
#pairsd	155.1	159.6	0		65.9	0
length	85.8	89.2	83.8	9.10−5	87.7	83.6	3.10−2
entropye	1.4	2.0	2.5	3.10−4	2.4	2.6	8.10−2
degeneracyf	352	350	350	0.9	349	352	0.4
GC%	45.5	46.5	49.2	0.2	48.6	48.9	0.9

^aThe 20 most successful out of 44. ^bOut of all 500 Pfam proteins. ^cStatistical significance of the successful/unsuccessful differences. ^dThe number of (X, Y) hits involving the sequence. ^eThe entropy of a position is exponentiated then averaged over each Pfam alignment, distinguishing 6 (not 20) amino acid classes. ^fCodon degeneracy summed over the protein sequence.