title: Sequence analysis of multidomain proteins: past perspectives and future directions.
authors.forename: Richard R
authors.initials: RR
authors.lastname: Copley
authors.forename: Chris P
authors.initials: CP
authors.lastname: Ponting
authors.forename: Jörg
authors.initials: J
authors.lastname: Schultz
authors.forename: Peer
authors.initials: P
authors.lastname: Bork
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D030562:Databases, Protein; D019143:Evolution, Molecular; D020131:Genes, Duplicate; D006801:Humans; D008954:Models, Biological; D008958:Models, Molecular; D005810:Multigene Family; D010802:Phylogeny; D017434:Protein Structure, Tertiary; D011506:Proteins / Q000737:chemistry* / Q000235:genetics* / Q000378:metabolism; D011956:Receptors, Cell Surface / Q000737:chemistry / Q000378:metabolism; D016415:Sequence Alignment; D017421:Sequence Analysis / Q000639:trends*; D017386:Sequence Homology, Amino Acid; D015398:Signal Transduction
chemical_list: D011506:Proteins; D011956:Receptors, Cell Surface