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SOLUTION NMR
Materials and Methods page
1K48
  •   NMR Eperiment Details Hide
    Representative Model Choice Rationale
    minimized average structure  
     
    Spectrometer Info
    Field Strength 750.0
    Manufacturer BRUKER
    Model DMX
     
    Sample Conditions
    IDs solution ID:1 condition ID:1
    Sample Contents 5 MM KALATA B1, 10% D2O
    Ionic Strength 0
    pH 3.00
    Pressure AMBIENT
    Temperature 298.00
     
     
  •   NMR Refinement Information Hide
    Refinement
    Method TORSION ANGLE DYNAMICS
    Details STRUCTURES ARE BASED ON A TOTAL OF 333 DISTANCE CONSTRAINTS. THIS INCLUDES 6 UPPER AND 6 LOWER LIMITS DEFINING 3 DISULFIDE BONDS, AS WELL AS 3 UPPER AND 3 LOWER LIMITS DEFINING A PEPTIDE BOND CYCLIZING THE PEPTIDE BACKBONE. RESIDUE NUMBERING FOLLOWS THE ORIGINAL DESCRIPTION OF CITATION 1, EXCEPT THAT FOR THE PURPOSES OF STRUCTURE CALCULATIONS, THE N-TERMINAL RESIDUE WAS TAKEN AS ASN8. THEREFORE, RESIDUES 30-36 IN THIS DEPOSITION CORRESPOND TO RESIDUES 1-7 IN CITATION 1 AND RELATED PDB ENTRY 1KAL. STRUCTURES WERE REFINED IN THE ABSENCE OF ANY ARTIFICIAL CONSTRAINTS DEFINING DISULFIDE BONDS UNTIL ALL NOES HAD BEEN ASSIGNED AND LOW TARGET FUNCTIONS WERE ACHIEVED (TF=0.6). 15 ADDITIONAL CALCULATIONS WERE PERFORMED WITH THESE INPUT DATA AND THE INCLUSION OF CONSTRAINTS DEFINING ALL POSSIBLE DISULFIDE PAIRING COMBINATIONS. THE STRUCTURES CONTAINING DISULFIDES BETWEEN [5(34)-13], [17-29] AND [22-27] DISPLAYED THE LOWEST TARGET FUNCTION (0.74, SECOND LOWEST WAS 1.54). ON THE BASIS OF THIS RESULT AND ANALYSIS OF NOES OBSERVED BETWEEN CYS SIDECHAIN PROTONS, THIS DISULFIDE BONDING ARRANGEMENT WAS ASSUMED TO BE CORRECT AND SERVED AS THE BASIS FOR THIS DEPOSITION.
     
  •   NMR Ensemble Information Hide
    Ensemble
    Conformers Submitted Total Number 1
     
  •   NMR Experimental Information Hide
    Experiment
    IDs experiment ID:1 solution ID:1 conditons ID:1
    Type 2D NOESY
     
  •   Additional NMR Experimental Information Hide
    Details
    Detail STRUCTURE WAS DETERMINED USING NOES FROM A SINGLE 100 MS MIXING TIME NOESY EXPERIMENT
     
  •   Software and Computing Hide
    NMR Software
    Authors C. Mumenthaler
    Classification data analysis
    Software Name XEASY 1.3.11
    Authors Bruker Instruments
    Classification collection
    Software Name XWINNMR 2.6
    Authors P. GUENTERT
    Classification refinement
    Software Name DYANA 1.5