Protein
Ubiquinol oxidase 4, chloroplastic/chromoplastic
Organism
Arabidopsis thaliana
Function
Acts early in chloroplast biogenesis as a component of a redox chain responsible for phytoene desaturation. Prevents the generation of toxic oxygen radicals and photooxidation of the nascent photosynthetic apparatus. Involved in the differentiation of multiple plastid types, including chloroplasts, amyloplasts, and etioplasts. Might participate in the chloroplast respiratory chain.
Similarity
Belongs to the alternative oxidase family.
Sequence
MAAISGISSGTLTISRPLVTLRRSRAAVSYSSSHRLLHHLPLSSRRLLLRNNHRVQATILQDDEEKVVVEESFKAETSTGTEPLEEPNMSSSSTSAFETWIIKLEQGVNVFLTDSVIKILDTLYRDRTYARFFVLETIARVPYFAFMSVLHMYETFGWWRRADYLKVHFAESWNEMHHLLIMEELGGNSWWFDRFLAQHIATFYYFMTVFLYILSPRMAYHFSECVESHAYETYDKFLKASGEELKNMPAPDIAVKYYTGGDLYLFDEFQTSRTPNTRRPVIENLYDVFVNIRDDEAEHCKTMRACQTLGSLRSPHSILEDDDTEEESGCVVPEEAHCEGIVDCLKKSITS