Fig. 4.—

Large UTRs are associated with a subset of large UIR genes. (A) Relationship between 5′-UTR and UIR size for four Aspergilli based on RNAseq annotation (data from the Aspergillus Genome Database, see Materials and Methods). Correlations are weak but highly significant for Aspergillus niger and A. oryzae (P < 1e−10) for the full data set, whereas equivalent significance is only seen for A. nidulans and A. fumigatus over lower UIR ranges. (B) Mean UTR length for orthologs with conserved UIR length, relative to the equivalent quintiles for all data regardless of conservation across species. Error bars represent standard error of the mean.