Transfer of endosymbiont genes to the nuclear genome and destinations of encoded protein products

Transfer of genetic material from Proteins encoded by genes originally organelles to nucleus and between derived from endosymbiont organelles continues in extant species ‘ genomes can be appropriated for other functions in host cell. Cyanobacterium (endosymbiotic ancestor) a-proteobacterium (endosymbiotic ancestor) Few genes retained in i . 7V - } Few genes retained in organelle genome; » “ ! organelle genome; most transferred to - . . most transferred to ancestral host nucleus. - g ’ i ancestral host nucleus. rProteins imported into organelles may be encoded by ‘i genes originally derived from endosymbionts (red and green) or originally derived from host genome (blue). i