Experiment: 1NXI

Solution structure of Vibrio cholerae protein VC0424

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_15N-separated_NOESY	1.5mM VC0424_delta16c, U-15N, 13C, Tris, pH 7.2	90% H2O/10% D2O	20mM Tris HCl, 500mM NaCl	7.8	ambient	293
2	3D_13C-separated_NOESY	1.5mM VC0424_delta16c, U-15N, 13C, Tris, pH 7.2	90% H2O/10% D2O	20mM Tris HCl, 500mM NaCl	7.8	ambient	293
3	HNHA	1.5mM VC0424_delta16c, U-15N, 13C, Tris, pH 7.2	90% H2O/10% D2O	20mM Tris HCl, 500mM NaCl	7.8	ambient	293
4	4D_13C-separated_NOESY	1.5mM VC0424_delta16c, U-15N, 13C, Tris, pH 7.2	90% H2O/10% D2O

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	800
2	Varian	INOVA	750
3	Varian	INOVA	600
4	Varian	UNITY	600

NMR Refinement
Method	Details	Software
distance geometry and simulated annealing	THE STRUCTURES ARE BASED ON A TOTAL OF 1263 RESTRAINTS. SUMMARY OF EXPERIMENTAL CONSTRAINTS: DISTANCE CONSTRAINTS: TOTAL = 1030; INTRA-RESIDUE [I=J] = 5; SEQUENTIAL [(I-J)=1] = 250; MEDIUM RANGE [1<(I-J)<5] = 329; LONG RANGE [(I-J)>=5] = 446; HYDROGEN BOND CONSTRAINTS = 116 (2 PER H-BOND); NUMBER OF DISTANCE CONSTRAINTS PER RESIDUE = 9.0; DIHEDRAL-ANGLE CONSTRAINTS = 117 (44 PHI, 62 PSI, 11 CHI1); TOTAL NUMBER OF CONSTRAINTS PER RESIDUE = 11.0 (RESIDES 9-124); NUMBER OF LONG RANGE CONSTRAINTS PER RESIDUE = 3.9; NUMBER OF STRUCTURES COMPUTED = 20; NUMBER OF STRUCTURES USED = 20. AVERAGE DISTANCE VIOLATIONS >0.001 ANG = 27.7; AVERAGE R.M.S. DISTANCE VIOLATION = 0.002 ANG; MAXIMUM NUMBER OF DISTANCE VIOLATIONS 36. AVERAGE DIHEDRAL ANGLE VIOLATIONS: >0.001 DEG = 2.0; MAX NUMBER OF DIHEDRAL ANGLE VIOLATIONS = 4 DEG; AVERAGE R.M.S. ANGLE VIOLATION = 0.03 DEG. RMSD VALUES: BACKBONE ATOMS (N,C,C',O) = 0.51 ANG; ALL HEAVY ATOMS = 1.03 ANG; PROCHECK: MOST FAVORED REGIONS = 82%; ADDITIONAL ALLOWED REGIONS = 16%; GENEROUSLY ALLOWED REGIONS = 1%; DISALLOWED REGIONS = 1%.	X-PLOR

NMR Ensemble Information
Conformer Selection Criteria	all calculated structures submitted
Conformers Calculated Total Number	20
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	X-PLOR	NIH-2.0.4	Schwieters, Kuszewski, Tjandra, Clore
2	processing	Felix	98	MSI
3	collection	VNMR	6.1C	Varian
4	data analysis	Sparky	3.98	Goddard, Kneller
5	refinement	X-PLOR	NIH-2.0.4	Schwieters, Kuszewski, Tjandra, Clore