A comparison of the presence (+), absence (−) or number of detectable ORC subunit and Cdc6 proteins encoded by the genomes of a range of eukaryotic species, which are grouped into taxa and into five supergroups; ‘+’ in parenthesis indicates that a single protein is found that is related to both Orc

athe supergroup Excavata is often split into two supergroups, one containing Euglenozoan, Heterolobosean and Jackobid (not shown) organisms, and the other containing Parabasalid, Diplomonad and Oxymonad (not shown) organisms.