Are the electron transport systems and chemiosmosis simply ubiquitous phenomena in prokaryotes, or are these similarities evidence of highly conserved common ancestry? Or is there another answer? Is there any information regarding the phylogenetics of Rickettsiales and Cyanobacteria. Do these two organisms belong to a single small clade or were these biochemistries (ETCs, ATP Synthases, etc) ubiquitous at some point and have simply been preserved in these two organisms today?

Question

aaronq · Answer

ETC is present in eukaryotes as well. Don't really know anything about the rest.

anonymous · Answer

ok so Cyanobacteria are eukaryotic though they have many processes that are similar to eubacteria (prokaryotes).