Fig. 4From: ProCarDB: a database of bacterial carotenoidsDistribution of carotenoids and their biosynthetic pathways described in this database (a) Distribution of carotenoid biosynthesis pathways across microorganisms based on our prediction, experimental characterization and prediction in the literature. A total of 594 organisms are characterized to have carotenoids. We have predicted pathways in 92Â % of the total organism, whereas validated pathway have been illustrated in only 5Â % organisms and predicted in another 3Â % of total organisms. b Carotenoids distribution in prokaryotes. Thirty-four percent of total organisms in this database are pigmented and thus have potential for possessing carotenoids. In another 16Â % of the organisms of the database, whole genome sequencing has revealed presence of genes involved in carotenoid biosynthesis, while the rest of the 50Â % organisms are those in which carotenoids are characterizedBack to article page