title: The limited universe of exons.
abstract: The catalogue of mosaic proteins showing evidence of exon-shuffling continues to expand. The repeated use of exon modules suggests that current protein diversity could have been generated from a finite set of such exon modules, and that the size and character of this underlying exon universe can still be glimpsed in extant proteins.
authors.affiliation: Department of Biology, Yale University, Osborn Memorial Laboratories, New Haven, Connecticut 06511.
authors.forename: R L
authors.initials: RL
authors.lastname: Dorit
authors.forename: W
authors.initials: W
authors.lastname: Gilbert
mesh_terms: D000818:Animals; D005075:Biological Evolution; D005091:Exons; D005796:Genes; D014644:Genetic Variation; D005810:Multigene Family; D011506:Proteins / Q000235:genetics
chemical_list: D011506:Proteins