Table 2.

Gain and Loss of Residue Classes in the Present-day Species Obtained from the Derived Substitutions Accumulated Within Each Terminal Branch of the Phylogenomic ML Tree

Species	Polar	Aliphatic	Aromatic	Aa +	Aa −	Cys	Pro	Gly
A. pompejana	+11	−4	+1	−4	−3	+1	−5	+3
A. caudata	−4	+13	+9	−1	−1	−5	−4	−7
P. sulfincola	+12	+4	0	−1	−5	+1	−4	−7
P. fijiensis	+4	+10	+9	+8	−21	+3	−4	−9
P. grasslei	+73	−14	−6	−18	−13	+2	−16	−8
P. pandorae	+65	+36	+4	−45	−33	−9	−27	+9

Note.—Aa+: positively charged amino acids, Aa−: negatively charged amino acids.