title: Demonstration of a cystine unit as a promising turn scaffold for the design of a parallel U-shaped two-helix bundle motif: crystal structure of the homodimer Cys(Aib(n))(2) (n = 3, 4).
authors.affiliation: Laboratory for the Structure of Matter, Naval Research Laboratory, Washington, DC 20375-5341, USA.
authors.forename: I L
authors.initials: IL
authors.lastname: Karle
authors.forename: D
authors.initials: D
authors.lastname: Ranganathan
authors.forename: C
authors.initials: C
authors.lastname: Lakshmi
mesh_terms: D018360:Crystallography, X-Ray; D003553:Cystine / Q000031:analogs & derivatives / Q000737:chemistry*; D019281:Dimerization; D008958:Models, Molecular; D009842:Oligopeptides / Q000737:chemistry*; D017433:Protein Structure, Secondary
chemical_list: D009842:Oligopeptides; C438364:tert-butoxycarbonyl-cysteine (alpha,alpha'-dimethylglycyl-alpha,alpha'-dimethylglycyl-alpha,alpha'-dimethylglycine methyl ester) amide disulfide; C438363:tert-butoxycarbonylcysteine (alpha,alpha'-dimethylglycyl-alpha,alpha'-dimethylglycyl-alpha,alpha'-dimethylglycyl-alpha,alpha'-dimethylglycine methyl ester) amide disulfide; D003553:Cystine