Fig. 4
From: Quantitative evolutionary proteomics of seminal fluid from primates with different mating systems
Comparison of the mean relative isotope abundance (RIA) of the TGM4 protein. a The Wilcox rank sum test identified significant differences in TGM4 protein abundances (inferred from mean RIA) between uni-male and multi-male mating systems. This analysis included 5 species with identical TGM4 peptides. b Within the MS data, proteins often have multiple unique peptides that are measured, and this plot measures the concordance of TGM4 peptides in the TGM4 protein. The relative abundance of 2 peptides from the same protein is plotted across multiple individuals and species. The significant correlation values (R2 = 0.91) indicate peptide concordance across species in the TGM4 protein. c The four TGM4 peptides show similar concordance across five primate species. Each series is a unique peptide in the TGM4 gene. The strong concordance remains even when the rhesus macaque sample was excluded