Abundance ratios of proteins involved in amino acid metabolism.

1Abundance ratio reflects ratio of protein levels in evolved relative to ancestral populations.NI, not identified (either protein was not identified during database search or abundance ratio did not meet significance threshold); EO, protein observed in evolved populations only; AO, protein observed in ancestral populations only.Abundance ratios reflect “1 peptide”/”2 peptides” as described in discussion.Abundance ratios of proteins involved in amino acid metabolism.