title: Evolutionarily mobile modules in proteins.
authors.affiliation: Center for Molecular Genetics, University of California, San Diego.
authors.forename: R F
authors.initials: RF
authors.lastname: Doolittle
authors.forename: P
authors.initials: P
authors.lastname: Bork
mesh_terms: D000818:Animals; D005075:Biological Evolution; D005091:Exons; D007438:Introns; D011506:Proteins / Q000737:chemistry / Q000235:genetics; D011995:Recombination, Genetic
chemical_list: D011506:Proteins