Research Article

The Roles and Evolutionary Patterns of Intronless Genes in Deuterostomes

Figure 2

Distribution of intronless genes among different cellular roles in each species. Su: sea urchin; sq, sea squirt; z: zebrafish; c: chicken; p: platypus; h: human. AAB: amino acid biosynthesis; BOC: biosynthesis of cofactors; CE: cell envelope; CP: Cellular processes; CIM: Central intermediary metabolism; EM: energy metabolism; FAM: fatty acid metabolism; PAP: purines and pyrimidines; RF: regulatory functions; RAT: replication and transcription; T: translation; TAB: transport and binding.
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