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NMR Solution structure of membrane associated protein from Bacillus cereus: Northeast Structural Genomics Consortium Target: BcR97A
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
2D 1H-15N HSQC
1.25 mM [U-100% 13C; U-100% 15N] BcR97A protein
90% H2O/10% D2O
5mM CaCl2, 100mM NaCl
6.5
1 atm
293
2
2D 1H-13C HSQC
1.25 mM [U-100% 13C; U-100% 15N] BcR97A protein
90% H2O/10% D2O
5mM CaCl2, 100mM NaCl
6.5
1 atm
293
3
3D HNCO
1.25 mM [U-100% 13C; U-100% 15N] BcR97A protein
90% H2O/10% D2O
5mM CaCl2, 100mM NaCl
6.5
1 atm
293
4
3D CBCA(CO)NH
1.25 mM [U-100% 13C; U-100% 15N] BcR97A protein
90% H2O/10% D2O
5mM CaCl2, 100mM NaCl
6.5
1 atm
293
5
3D HNCACB
1.25 mM [U-100% 13C; U-100% 15N] BcR97A protein
90% H2O/10% D2O
5mM CaCl2, 100mM NaCl
6.5
1 atm
293
6
3D HBHA(CO)NH
1.25 mM [U-100% 13C; U-100% 15N] BcR97A protein
90% H2O/10% D2O
5mM CaCl2, 100mM NaCl
6.5
1 atm
293
7
3D C(CO)NH
1.25 mM [U-100% 13C; U-100% 15N] BcR97A protein
90% H2O/10% D2O
5mM CaCl2, 100mM NaCl
6.5
1 atm
293
8
3D HCCH-TOCSY
1.25 mM [U-100% 13C; U-100% 15N] BcR97A protein
90% H2O/10% D2O
5mM CaCl2, 100mM NaCl
6.5
1 atm
293
9
3D HCCH-COSY
1.25 mM [U-100% 13C; U-100% 15N] BcR97A protein
90% H2O/10% D2O
5mM CaCl2, 100mM NaCl
6.5
1 atm
293
10
3D 13C-edited_NOESY
1.25 mM [U-100% 13C; U-100% 15N] BcR97A protein
90% H2O/10% D2O
5mM CaCl2, 100mM NaCl
6.5
1 atm
293
11
3D 1H-15N NOESY
1.25 mM [U-100% 13C; U-100% 15N] BcR97A protein
90% H2O/10% D2O
5mM CaCl2, 100mM NaCl
6.5
1 atm
293
12
3D 13C-edited_NOESY
1.25 mM [U-100% 13C; U-100% 15N] BcR97A protein
90% H2O/10% D2O
5mM CaCl2, 100mM NaCl
6.5
1 atm
293
13
2D 1H-15N HSQC
0.77 mM [U-10% 13C; U-100% 15N] BcR97A protein
90% H2O/10% D2O
5mM CaCl2, 100mM NaCl
6.5
1 atm
293
14
2D 1H-13C HSQC
0.77 mM [U-10% 13C; U-100% 15N] BcR97A protein
90% H2O/10% D2O
5mM CaCl2, 100mM NaCl
6.5
1 atm
293
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Varian
INOVA
600
2
Bruker
AVANCE
600
NMR Refinement
Method
Details
Software
simulated annealing
The structure was determined using triple resonance NMR spectroscopy. Automated backbone resonance assignments were made using AutoAssign and pattern picker algorithms developed for automated assignments of GFT NMR data. Side chain assignments were completed manually. Automated NOESY assignments were made using AUTOSTRUCTURE and structure solution was determined using AUTOSTRUCTURE and CYANA-2.1. 176 structures were calculated and 20 best conformers were then refined in a shell of water using CNS. Initial Dihedral constriants were obtained from TALOS. The structure calculations were done including the C-terminal tag LEHHHHHH. Completeness of assignments excluding the 8-residue tag are: Backbone ~98.5%, sidechain ~ 95%, stereospecific methyl assignments 100%. The assignments were validated using the AVS software. Final structure quality factors determined using PSVS software: Ordered residues are defined as: 10-22,32-42,47-58,63-69,76-93. (a) RMSD(ordered residues) all Backbone atoms 0.9A; all heavy atoms 1.4A. (b) Ramachandran statistics for all ordered residues: Most favoured regions:85.9%, Additionally allowed regions 14.0%, Generously allowed region:0.2%. (c) Procheck scores for ordered residues (Raw/Z)phi-psi -0.73/-2.56, All:-0.49/-2.90 (d) MolProbity clash score (Raw/Z): 17.11/-1.41. (e) RPFscores for goodness of fit to NOESY data : Recall:0.963 Precision: 0.805F-measure:0.877 DP-score: 0.848
AutoAssign
NMR Ensemble Information
Conformer Selection Criteria
structures with the lowest energy
Conformers Calculated Total Number
176
Conformers Submitted Total Number
20
Representative Model
1 (lowest energy)
Additional NMR Experimental Information
Details
GFT (4,3)D data was acquired for backbone assignments.