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THE 3D STRUCTURE OF THE OLIGOMERIZATION DOMAIN (RESIDUES
319 - 360) OF P53 BY MULTI-DIMENSIONAL HETERONUCLEAR-EDITED
AND -FILTERED NMR IS BASED ON 3824 EXPERIMENTAL RESTRAINTS
COMPRISING THE FOLLOWING INTRA- AND INTER-SUBUNIT
RESTRAINTS: (A) INTRASUBUNIT: 840 SEQUENTIAL (|I-J|=1),
744 SHORT RANGE (1 < |I-J| >=5) AND 72 LONG RANGE
(|I-J| >5) INTERRESIDUES AND INTRARESIDUE APPROXIMATE
INTERPROTON DISTANCE RESTRAINTS, 136 DISTANCE RESTRAINTS
FOR 68 HYDROGEN BONDS, 268 TORSION ANGLE (144 PHI, 104 CHI1
AND 20 CHI2) RESTRAINTS, AND 144 THREE-BOND HN-HA COUPLING
CONSTANT RESTRAINTS. (B) INTERSUBUNIT: 72 A-B/C-D,
758 A-C/B-D, 10 A-D/B-C APPROXIMATE INTERPROTON DISTANCE
RESTRAINTS, AND 24 DISTANCE RESTRAINTS FOR 12 HYDROGEN
BONDS INVOLVING THE A-C/B-D SUBUNITS. IN ADDITION, THERE
ARE A TOTAL OF 38 CALPHA AND 38 CB CHEMICAL SHIFT
RESTRAINTS PER SUBUNIT THAT HAVE BEEN INCORPORATED
INTO THE REFINEMENT [J. KUSZWESKI, J. QIN, A.M. GRONENBORN
AND G.M. CLORE, J. MAGN RESON. SER IN PRESS (1994)]
THE STRUCTURES ARE CALCULATED USING THE HYBRID METRIC
MATRIX DISTANCE GEOMETRY-DYNAMICAL SIMULATED ANNEALING
METHOD DESCRIBED BY: NILGES, M., CLORE, G.M. AND
GRONENBORN, A.M. (1988) FEBS LETT. 29, 317-324. ALL
STRUCTURAL STATISTICS ARE GIVEN IN THE JRNL REFERENCE.
THE STRUCTURE PRESENTED IN THIS ENTRY IS THE RESTRAINED
MINIMIZED AVERAGE STRUCTURE (SA)R. THIS IS OBTAINED BY
FIRST AVERAGING THE COORDINATES OF THE INDIVIDUAL 35
DYNAMICAL SIMULATED ANNEALING SA STRUCTURES BEST FITTED TO
RESIDUES 324 - 356 OF ALL FOUR SUBUNITS AND SUBJECTING THE
RESULTING COORDINATES TO RESTRAINED MINIMIZATION. THE
QUANTITY PRESENTED IN COLUMNS 61 - 66 IN THIS SET OF
COORDINATES (THE B-FACTOR FIELD IN X-RAY STRUCTURES) GIVES
THE AVERAGE RMS DIFFERENCE BETWEEN THE INDIVIDUAL SA
STRUCTURES AND THE MEAN STRUCTURE. THE NUMBERS IN COLUMNS
61 - 66 OF THE INDIVIDUAL STRUCTURES HAVE NO MEANING. NOTE
THAT RESIDUES 319 - 323 AT THE N-TERMINUS AND RESIDUES 357
- 360 AT THE C-TERMINUS ARE DISORDERED. THE SET OF 35
STRUCTURES IS PRESENTED IN PROTEIN DATA BANK ENTRY 1OLH. |
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