Comparison of the relative abundance of proteins according to gene ontology terms. Gene ontology categories of “biological process” GO-domain were used for annotation of the Ch. tentans proteome and compared to gene ontology annotation of the D. melanogaster proteome. The bars represent the relative abundance of GO categories, i.e. for every dataset we calculated the frequencies of annotations of proteins to a GO category relative to the total amount of proteins annotated to “biological processes”.