title: Evolution of proteins formed by beta-sheets. II. The core of the immunoglobulin domains.
mesh_terms: D000595:Amino Acid Sequence; D001665:Binding Sites; D005075:Biological Evolution; D003545:Cysteine; D004220:Disulfides; D005973:Glutamine; D007136:Immunoglobulins; D008958:Models, Molecular; D009154:Mutation; D011487:Protein Conformation; D014364:Tryptophan
chemical_list: D004220:Disulfides; D007136:Immunoglobulins; D005973:Glutamine; D014364:Tryptophan; D003545:Cysteine