title: Are there dominant membrane protein families with a given number of helices?
authors.forename: I T
authors.initials: IT
authors.lastname: Arkin
authors.forename: A T
authors.initials: AT
authors.lastname: Brünger
authors.forename: D M
authors.initials: DM
authors.lastname: Engelman
mesh_terms: D000818:Animals; D008565:Membrane Proteins / Q000737:chemistry* / Q000145:classification
chemical_list: D008565:Membrane Proteins