1ITI

THE HIGH RESOLUTION THREE-DIMENSIONAL SOLUTION STRUCTURE OF HUMAN INTERLEUKIN-4 DETERMINED BY MULTI-DIMENSIONAL HETERONUCLEAR MAGNETIC RESONANCE SPECTROSCOPY


SOLUTION NMR Experimental Data


NMR Refinement
Details DETAILS OF THE STRUCTURE DETERMINATION AND ALL STRUCTURAL STATISTICS ARE GIVEN IN THE REFERENCE LISTED ON THE JRNL RECORDS ABOVE (I.E. AGREEMENT WITH EXPERIMENTAL RESTRAINTS, DEVIATIONS FROM IDEALITY FOR BOND LENGTHS, ANGLES, PLANES AND CHIRALITY, NON-BONDED CONTACTS, ATOMIC RMS DIFFERENCES BETWEEN THE CALCULATED STRUCTURES). THE STRUCTURES ARE BASED ON A TOTAL OF 2973 EXPERIMENTAL NMR RESTRAINTS COMPRISING: 2515 INTERPROTON DISTANCE RESTRAINTS DERIVED FROM NOE MEASUREMENTS; 102 HYDROGEN-BONDING DISTANCE RESTRAINTS FOR 51 HYDROGEN-BONDS IDENTIFIED ON THE BASIS OF THE NOE AND AMIDE PROTON EXCHANGE DATA, AS WELL AS THE INITIAL STRUCTURE CALCULATIONS; AND 130 PHI, 119 PSI, 73 CHI1, 32 CHI2 AND 2 CHI3 TORSION ANGLE RESTRAINTS DERIVED FROM COUPLING CONSTANTS, NOE DATA, AND 13C SECONDARY CHEMICAL SHIFTS. THE METHOD USED TO DETERMINE THE STRUCTURES IS THE HYBRID METRIC MATRIX DISTANCE GEOMETRY-DYNAMICAL SIMULATED ANNEALING METHOD [NILGES, M., CLORE, G.M. & GRONENBORN, A.M., FEBS LETT. 229, 317-324 (1988)]. A TOTAL OF 30 STRUCTURES WERE CALCULATED. THE ATOMIC RMS DISTRIBUTION ABOUT THE MEAN COORDINATE POSITIONS FOR RESIDUES 8 - 129 IS 0.44 (+/-0.03) ANGSTROMS FOR THE BACKBONE ATOMS, 0.83 (+/-0.03) ANGSTROMS FOR ALL ATOMS, AND 0.51 (+/-0.04) ANGSTROMS FOR ALL ATOMS EXCLUDING DISORDERED SIDE CHAINS. THE N- (RESIDUES 1 - 7) AND C- (RESIDUES 130 - 133) TERMINAL RESIDUES ARE DISORDERED. THE COORDINATES OF THE RESTRAINED MINIMIZED STRUCTURE ARE LISTED FIRST AS MODEL 0. THIS (SA)R RESTRAINED MINIMIZED MEAN STRUCTURE WAS DERIVED BY AVERAGING THE COORDINATES OF THE INDIVIDUAL SA STRUCTURES (BEST FITTED TO RESIDUES 8 - 129) AND SUBJECTING THE RESULTING COORDINATES TO RESTRAINED MINIMIZATION. THE QUANTITY PRESENTED IN THE TEMPERATURE FACTOR FIELD (COLUMNS 61 - 66) REPRESENTS THE ATOMIC RMS DEVIATIONS OF THE 30 INDIVIDUAL SA STRUCTURES ABOUT THE MEAN STRUCTURE. RESIDUES 1 - 7 AND 130 - 133 AT THE N- AND C-TERMINI, RESPECTIVELY, ARE DISORDERED.
NMR Ensemble Information
Conformers Submitted Total Number 31