>sp|Q4VKV1|CRTN_METSP 4,4'-diapophytoene desaturase (4,4'-diapolycopene-forming) OS=Methylomonas sp GN=crtN MANTKHIIIVGAGPGGLCAGMLLSQRGFKVSIFDKHAEIGGRNRPINMNGFTFDTGPTFL LMKGVLDEMFELCERRSEDYLEFLPLSPMYRLLYDDRDIFVYSDRENMRAELQRVFDEGT DGYEQFMEQERKRFNALYPCITRDYSSLKSFLSLDLIKALPWLAFPKSVFNNLGQYFNQE KMRLAFCFQSKYLGMSPWECPALFTMLPYLEHEYGIYHVKGGLNRIAAAMAQVIAENGGE IHLNSEIESLIIENGAAKGVKLQHGAELRGDEVIINADFAHAMTHLVKPGVLKKYTPENL KQREYSCSTFMLYLGLDKIYDLPHHTIVFAKDYTTNIRNIFDNKTLTDDFSFYVQNASAS DDSLAPAGKSALYVLVPMPNNDSGLDWQAHCQNVREQVLDTLGARLGLSDIRAHIECEKI ITPQTWETDEHVYKGATFSLSHKFSQMLYWRPHNRFEELANCYLVGGGTHPGSGLPTIYE SARISAKLISQKHRVRFKDIAHSAWLKKAKA