Solution structure of xtz1-peptide, a beta-hairpin peptide with a structured extension
In Vivo Screening Identifies a Highly Folded beta-Hairpin Peptide with a Structured Extension.
HP7 peptide. Residues 2-11 of HP7 are equivalent to residues 6-15 of xtz1-peptide.
structures with the least restraint violations
Chemical shift assignments were manually done. Automated NOESY assignment and structure ensemble calculation was performed with CYANA v.2.1. A total of 431 unassigned NOESY peaks with intensity greater than ~1% of the most intense NOESY peak were input to CYANA. CYANA assigned 403 of 431 (93.5%) peaks, of which 309 were used as distance constraints in the structure calculation.
Simulated annealing and TORSION ANGLE DYNAMICS
2 mM xtz1-peptide; 90% H2O, 10% D2O, pH 6, 0.010 ml of 0.1% DSS