title: Introduction: protein motifs.
authors.affiliation: Department of Biochemistry, Duke University Medical Center, Durham, North Carolina 27710.
authors.forename: J S
authors.initials: JS
authors.lastname: Richardson
mesh_terms: D017510:Protein Folding; D017433:Protein Structure, Secondary; D011506:Proteins / Q000737:chemistry*
chemical_list: D011506:Proteins