Navigation Tabs In situ atomic-resolution structure of the baseplate antenna complex in Chlorobaculum tepidum obtained combining solid-state NMR spectroscopy, cryo electron microscopy and polarization spectroscopy
ELECTRON MICROSCOPY - SOLID-STATE NMR
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D 13C-13C DARR 10.0 % [U-13C; U-15N] CsmA, 10.0 % [U-13C; U-15N] BACTERIOCHLOROPHYLL A, 35.0 % [U-13C] Carotenoids, 35.0 % [U-13C] Lipids, 10.0 % n.a. Magnesium ion solid state, lyophylized 0.0 M 7.0 1 atm 280 Bruker AVANCE II 700 2 3D NCACX 10.0 % [U-13C; U-15N] CsmA, 10.0 % [U-13C; U-15N] BACTERIOCHLOROPHYLL A, 35.0 % [U-13C] Carotenoids, 35.0 % [U-13C] Lipids, 10.0 % n.a. Magnesium ion solid state, lyophylized 0.0 M 7.0 1 atm 280 Bruker AVANCE II 700 3 3D NCOCX 10.0 % [U-13C; U-15N] CsmA, 10.0 % [U-13C; U-15N] BACTERIOCHLOROPHYLL A, 35.0 % [U-13C] Carotenoids, 35.0 % [U-13C] Lipids, 10.0 % n.a. Magnesium ion solid state, lyophylized 0.0 M 7.0 1 atm 280 Bruker AVANCE II 700 4 3D CANCO 10.0 % [U-13C; U-15N] CsmA, 10.0 % [U-13C; U-15N] BACTERIOCHLOROPHYLL A, 35.0 % [U-13C] Carotenoids, 35.0 % [U-13C] Lipids, 10.0 % n.a. Magnesium ion solid state, lyophylized 0.0 M 7.0 1 atm 280 Bruker AVANCE II 700 5 3D CONCA 10.0 % [U-13C; U-15N] CsmA, 10.0 % [U-13C; U-15N] BACTERIOCHLOROPHYLL A, 35.0 % [U-13C] Carotenoids, 35.0 % [U-13C] Lipids, 10.0 % n.a. Magnesium ion solid state, lyophylized 0.0 M 7.0 1 atm 280 Bruker AVANCE II 700 6 2D NCA 10.0 % [U-13C; U-15N] CsmA, 10.0 % [U-13C; U-15N] BACTERIOCHLOROPHYLL A, 35.0 % [U-13C] Carotenoids, 35.0 % [U-13C] Lipids, 10.0 % n.a. Magnesium ion solid state, lyophylized 0.0 M 7.0 1 atm 280 Bruker AVANCE II 700 7 2D NCO 10.0 % [U-13C; U-15N] CsmA, 10.0 % [U-13C; U-15N] BACTERIOCHLOROPHYLL A, 35.0 % [U-13C] Carotenoids, 35.0 % [U-13C] Lipids, 10.0 % n.a. Magnesium ion solid state, lyophylized 0.0 M 7.0 1 atm 280 Bruker AVANCE II 700 8 2D 13C-13C DARR 10.0 % [U-13C; U-15N] CsmA, 10.0 % [U-13C; U-15N] BACTERIOCHLOROPHYLL A, 35.0 % [U-13C] Carotenoids, 35.0 % [U-13C] Lipids, 10.0 % n.a. Magnesium ion solid state, lyophylized 0.0 M 7.0 1 atm 280 Bruker AVANCE II 500
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AVANCE II 700 2 Bruker AVANCE II 500
NMR Refinement Method Details Software torsion angle dynamics Xplor-NIH
NMR Ensemble Information Conformer Selection Criteria target function Conformers Calculated Total Number 80 Conformers Submitted Total Number 1 Representative Model 1 (target function and agreement with back-calculated cd spectra)
Computation: NMR Software # Classification Version Software Name Author 5 refinement Xplor-NIH 2.33 Charles Schwieters, Marius Clore 2 structure calculation GASyCS Nielsen 4 peak picking Sparky Goddard
Sample Carotenosome organelle consisting of csma proteins and bchla antenna molecules.
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK II Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 1790 Reported Resolution (Å) 26.5 Resolution Method FSC 0.5 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Data Acquisition Detector Type GATAN ULTRASCAN 4000 (4k x 4k) Electron Dose (electrons/Å**2) 8
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) Maximum Defocus (nm) Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 59000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION EMAN 2 IMAGE ACQUISITION EPU CTF CORRECTION CTFFIND 3 INITIAL EULER ASSIGNMENT EMAN 2 FINAL EULER ASSIGNMENT Strul CTF CORRECTION SPIDER
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING ONLY 1790
