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NMR Solution structure of a diflavin flavoprotein A3 from Nostoc sp. PCC 7120, Northeast Structural Genomics Consortium Target NsR431C
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
2D 1H-15N HSQC
1.18 mM [U-100% 13C; U-100% 15N] NsR431C
90% H2O/10% D2O
5mM CaCl2, 200mM NaCl
6.5
1 atm
293
2
2D 1H-13C HSQC
1.18 mM [U-100% 13C; U-100% 15N] NsR431C
90% H2O/10% D2O
5mM CaCl2, 200mM NaCl
6.5
1 atm
293
3
3D CBCA(CO)NH
1.18 mM [U-100% 13C; U-100% 15N] NsR431C
90% H2O/10% D2O
5mM CaCl2, 200mM NaCl
6.5
1 atm
293
4
3D HNCACB
1.18 mM [U-100% 13C; U-100% 15N] NsR431C
90% H2O/10% D2O
5mM CaCl2, 200mM NaCl
6.5
1 atm
293
5
3D HNCO
1.18 mM [U-100% 13C; U-100% 15N] NsR431C
90% H2O/10% D2O
5mM CaCl2, 200mM NaCl
6.5
1 atm
293
6
3D HNCA
1.18 mM [U-100% 13C; U-100% 15N] NsR431C
90% H2O/10% D2O
5mM CaCl2, 200mM NaCl
6.5
1 atm
293
7
3D HN(CO)CA
1.18 mM [U-100% 13C; U-100% 15N] NsR431C
90% H2O/10% D2O
5mM CaCl2, 200mM NaCl
6.5
1 atm
293
8
3D HBHA(CO)NH
1.18 mM [U-100% 13C; U-100% 15N] NsR431C
90% H2O/10% D2O
5mM CaCl2, 200mM NaCl
6.5
1 atm
293
9
3D 1H-13C NOESY
1.18 mM [U-100% 13C; U-100% 15N] NsR431C
90% H2O/10% D2O
5mM CaCl2, 200mM NaCl
6.5
1 atm
293
10
3D 1H-15N NOESY
1.18 mM [U-100% 13C; U-100% 15N] NsR431C
90% H2O/10% D2O
5mM CaCl2, 200mM NaCl
6.5
1 atm
293
11
2D 1H-15N HSQC
1.18 mM [U-10% 13C; U-100% 15N] NsR431C
100% D2O
5mM CaCl2, 200mM NaCl
6.5
1 atm
293
12
2D 1H-13C HSQC
1.18 mM [U-10% 13C; U-100% 15N] NsR431C
100% D2O
5mM CaCl2, 200mM NaCl
6.5
1 atm
293
13
2D 1H-15N HSQC
1.18 mM [U-100% 13C; U-100% 15N] NsR431C 100% D2O
100% D2O
5mM CaCl2, 200mM NaCl
6.5
1 atm
293
14
2D 1H-13C HSQC
1.18 mM [U-100% 13C; U-100% 15N] NsR431C 100% D2O
100% D2O
5mM CaCl2, 200mM NaCl
6.5
1 atm
293
15
3D 1H-13C NOESY
1.18 mM [U-100% 13C; U-100% 15N] NsR431C 100% D2O
100% D2O
5mM CaCl2, 200mM NaCl
6.5
1 atm
293
16
3D HCCH-TOCSY
1.18 mM [U-100% 13C; U-100% 15N] NsR431C
90% H2O/10% D2O
5mM CaCl2, 200mM NaCl
6.5
1 atm
293
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Bruker
AVANCE
600
2
Bruker
AVANCE
800
NMR Refinement
Method
Details
Software
simulated annealing
140 structures were calculated and 20 best conformers were refined in a shell of water using CNS. Initial dihedral angles were obtained using TALOS. Final quality scores were determined using PSVS software. Ordered residues are defined as: 2 - 9, 12 - 27, 31 - 36, 40 - 57, 61 - 79, 84 - 85, 87 - 89, 96 - 108, 110 - 111, 122 - 146; (a) RMSD (ordered residues) all Backbone atoms: 1.0A; all heavy atoms: 1.4A; (b) Ramachandran statistics for all ordered residues: Most favoured: 92.1%; Additionally allowed: 7.2%; Generously allowed: 0.6%; disallowed: 0.2%; (c) Procheck scores for ordered residues (Raw/Z)phi-psi -0.04/0.16,
All:-0.10/-0.59. (d) MolProbity clash score (Raw/Z) 22.23/-2.12.
AutoAssign
NMR Ensemble Information
Conformer Selection Criteria
structures with the lowest energy
Conformers Calculated Total Number
140
Conformers Submitted Total Number
20
Representative Model
1 (lowest energy)
Additional NMR Experimental Information
Details
Data acquisition on B600 was performed using 35ul of 1.18mM sample and a 1.7mm microcryoprobe. The structure was determined using triple resonance NMR spectroscopy. Automated backbone assignments were made using AutoAssign. Sidechain assignments were completed manually. Automated NOESY assignments were made using AutoStructure and structure solution was determined using AutoStructure and CYANA-2.1. The structure calculations were done including the C-terminal 6xHis tag LEHHHHHH. Resonance assignments were validated using AVS validation software.