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Solution NMR Structure of Zinc Finger Protein yacG from Escherichia coli. Northeast Structural Genomics Consortium Target ET92.
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
4D_13C-separated_NOESY
2mM YacG U-15N, 450 mM NaCl, 25 mM Na2HPO4, 10 mM DTT
90% H2O/10% D2O
450 mM salt, 25 mM phosphate buffer
6.5
ambient
298
2
3D_13C-separated_NOESY
2mM YacG U-15N, 450 mM NaCl, 25 mM Na2HPO4, 10 mM DTT
90% H2O/10% D2O
450 mM salt, 25 mM phosphate buffer
6.5
ambient
298
3
3D_15N-separated_NOESY
2mM YacG U-15N, 450 mM NaCl, 25 mM Na2HPO4, 10 mM DTT
90% H2O/10% D2O
450 mM salt, 25 mM phosphate buffer
6.5
ambient
298
4
HNHA
2mM YacG U-15N, 450 mM NaCl, 25 mM Na2HPO4, 10 mM DTT
90% H2O/10% D2O
450 mM salt, 25 mM phosphate buffer
6.5
ambient
298
5
2H_exchange
2mM YacG U-15N, 450 mM NaCl, 25 mM Na2HPO4, 10 mM DTT
90% H2O/10% D2O
450 mM salt, 25 mM phosphate buffer
6.5
ambient
298
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Varian
INOVA
600
2
Varian
INOVA
750
3
Varian
INOVA
800
NMR Refinement
Method
Details
Software
distance geometry and simulated annealing
THE STRUCTURES ARE BASED ON A TOTAL OF 396 RESTRAINTS. SUMMARY OF
EXPERIMENTAL CONSTRAINTS: DISTANCE CONSTRAINTS: TOTAL = 367; ZN RESTRAINTS 10;
INTRA-RESIDUE [I=J] = 93; SEQUENTIAL [(I-J)=1] = 120; MEDIUM RANGE [1<(I-J)<5] = 52;
LONG RANGE [(I-J)>=5] = 86; NUMBER OF DISTANCE CONSTRAINTS PER RESIDUE (RESIDUES 4-40)= 9.8;
DIHEDRAL-ANGLE CONSTRAINTS = 29 (16 PHI, 13 PSI); TOTAL HYDROGEN BOND CONSTRAINTS = 6 (2 PER H-BOND);
TOTAL NUMBER OF CONSTRAINTS PER RESIDUE (4-40)= 10.6; NUMBER OF LONG RANGE CONSTRAINTS PER RESIDUE = 2.6;
NUMBER OF STRUCTURES COMPUTED = 40; NUMBER OF STRUCTURES USED = 20.
AVERAGE RESIDUAL CONSTRAINT VIOLATIONS: DISTANCE VIOLATIONS >0.0 ANG = 20.
AVERAGE R.M.S. DISTANCE VIOLATION = 0.011 ANG. MAXIMUM NUMBER OF DISTANCE VIOLATIONS 26.
AVERAGE DIHEDRAL ANGLE VIOLATIONS: >0 DEG = 0.8; MAX NUMBER OF ANGLE VIOLATION = 2 DEG;
AVERAGE R.M.S. ANGLE VIOLATION = 0.11 DEG. RMSD VALUES: BACKBONE ATOMS (N,C,C') OF RESIDUES (4-40) = 0.46 ANG;
BACKBONE ATOMS(N,C,C') OF SECONDARY STRUCTURE RESIDUES (6-17, 30-37) = 0.22 ANG;
ALL HEAVY ATOMS OF RESIDUES (4-40) = 1.01 ANG; ALL HEAVY ATOMS OF SECONDARY STRUCTURE RESIDUES = 0.77 ANG. PROCHECK
USING RESIDUES (4-40): MOST FAVORED REGIONS = 76%; ADDITIONAL ALLOWED REGIONS = 16%;
GENEROUSLY ALLOWED REGIONS = 4%; DISALLOWED REGIONS = 4%. PROCHECK USING SECONDARY STRUCTURE RESIDUES (6-17, 30-37):
MOST FAVOREDREGIONS = 95%; ADDITIONAL ALLOWED REGIONS = 5%; GENEROUSLY ALLOWED REGIONS =0%; DISALLOWED REGIONS = 0%.