The circular mitochondrial genome of Chrysodidymus synuroideus (33 kbp) contains a standard set of mitochondrial protein-coding genes, including cob, cox1,2,3, nad1,2,3,4,4L,5,6, and atp6,8,9, two rRNA genes (rns, rnl), and genes specifying 24 tRNAs. In addition, we have found the ribosomal protein genes rps3,4,7,8,10,12,13,14,19 and rpl2,6,14, three 'rare' nad genes (nad7, nad9 and nad11), and 8 unique ORFs. As is the case in Ochromonas danica, the Chrysodiymus mitochondrial genes do not contain introns. The tightly packed genes are separated by very short A+T-rich intergenic regions.
The mitochondrial translation code in Chrysodidymus synuroideus is the standard genetic code, as in its known relatives, Ochromonas danica and Phytophthora infestans.