Gene maps of the mitochondrial genomes of CMS and male-fertile pepper lines. (a) Gene map of FS4401 (CMS) (b) Gene map of Jeju (male-fertile). The genes drawn outside of the circle are transcribed clockwise and those inside, counterclockwise. The colors of the genes denote the functions of the gene products. Large repeat sequences (>1 kb) are shown as colored arrows on the outer circle. Sequence blocks that were syntenic between genomes (>2 kb; > 95% similarity) are depicted on the inner circles. They were drawn in two lines of inner circles to separate blocks in different directions.