1MDJ

HIGH RESOLUTION SOLUTION NMR STRUCTURE OF MIXED DISULFIDE INTERMEDIATE BETWEEN HUMAN THIOREDOXIN (C35A, C62A, C69A, C73A) MUTANT AND A 13 RESIDUE PEPTIDE COMPRISING ITS TARGET SITE IN HUMAN NFKB (RESIDUES 56-68 OF THE P50 SUBUNIT OF NFKB)


SOLUTION NMR Experimental Data


NMR Refinement
Details THE 3D STRUCTURE OF THE HUMAN THIOREDOXIN-NFKB PEPTIDE COMPLEX IN SOLUTION BY NMR IS BASED ON 3213 EXPERIMENTAL RESTRAINTS COMPRISING: 2546 STRUCTURE USEFUL INTERPROTON DISTANCE RESTRAINTS 36 RESTRAINTS FOR 18 BACKBONE H-BONDS 44 RESTRAINTS FOR 6 BOUND WATER MOLECULES 300 TORSION ANGLE RESTRAINTS (104 PHI, 76 PSI, 78 CHI1 AND 31 CHI2 FOR HUMAN THIOREDOXIN, AND 7 CHI1 AND 4 CHI2 RESTRAINTS FOR THE NFKB PEPTIDE) 88 HN-HALPHA THREE-BOND COUPLING CONSTANTS 102 13CALPHA AND 97 13CB CHEMICAL SHIFT RESTRAINTS. THE BREAKDOWN OF THE INTERPROTON DISTANCE RESTRAINTS IS AS FOLLOWS: INTRAMOLECULAR HTRX RESTRAINTS: 503 SEQUENTIAL 437 SHORT RANGE (1 < |I-J|<=5) 727 LONG RANGE (|I-J|>5) 690 INTRARESIDUE INTRAMOLECULAR PEPTIDE RESTRAINTS: 115 INTERMOLECULAR HTRX-NFKB: 74 THE STRUCTURES ARE CALCULATED USING THE HYBRID METRIC MATRIX DISTANCE GEOMETRY-DYNAMICAL SIMULATED ANNEALING METHOD DESCRIBED BY: NILGES, M., CLORE, G.M. & GRONENBORN, A.M. (1988) FEBS LETT 229, 317 - 324. ALL STRUCTURAL STATISTICS ARE GIVEN IN THE REFERENCE. THE STRUCTURE FOUND IN PDB ENTRY 1MDI IS THE RESTRAINED MINIMIZED AVERAGE STRUCTURE: (SA)R. THIS IS OBTAINED BY FIRST AVERAGING THE COORDINATES OF THE INDIVIDUAL 60 DYNAMICAL SIMULATED ANNEALING SA STRUCTURES BEST FITTED TO RESIDUES 1 - 105 OF HTRX AND RESIDUES 57 - 67 OF THE PEPTIDE AND SUBJECTING THE RESULTING COORDINATES TO RESTRAINED MINIMIZATION. THE LAST NUMBER COLUMN IN THIS SET OF COORDINATES (THE B-FACTOR COLUMN IN X-RAY STRUCTURES) GIVES THE AVERAGE RMS DIFFERENCE BETWEEN THE INDIVIDUAL SA STRUCTURES AND THE MEAN STRUCTURE. THE NUMBERS IN THE LAST COLUMN OF THE INDIVIDUAL STRUCTURES HAVE NO MEANING.
NMR Ensemble Information
Conformers Submitted Total Number 30