Genomic organization of mGBP genes on chromosome 3 (A) and chromosome 5 (B). Translated exons are illustrated in black, 5' untranslated exons in grey and 3' untranslated exons are shaded. The alternative 5' non-coding exons of mGBP3 (I-a, II, I-b, and III) and mGBP4 (I, II, and III) are numbered separately. The mRNAs for mGBP5 and mGBP5a are differentially spliced transcripts encoded by the same genomic locus. However, since alternative splice acceptor sites in exon 5 are used and an alternative exon 10a is inserted in the different mRNAs two schematic illustrations are provided. The inversion of the first two exons of pseudogene pseudomGbp2 is indicated by black arrowheads. The length (bp) of each exon and intron is specified. The depicted scale bars correspond to the different rulers used for introns, coding or non-coding exons.