Fig. 3

A viral insertion in the Asterochloris genome. a GC content and gene distribution. The diagram represents a 1 Mb genomic region produced by joining scaffolds 120 and 80 at their inverted repeat-containing edges (purple triangles). The % GC content is proportional to the height and color intensity of the orange-yellow band. Genes are indicated by rectangles whose color represents the category of their best match in Genbank (BLASTP e-value <1e^− 5). The blue or red segments perpendicular to the Kb line are repeated sequences or gaps, respectively. The low GC region in yellow represents the remnant of a viral insertion (Additional file 4). b Origins of best matches. Most genes in the low GC region of A. glomerata are viral or prokaryotic in origin, in contrast to those in the genome as a whole