8FEE

Structure of Mce1 transporter from Mycobacterium smegmatis in the absence of LucB (Map2)


ELECTRON MICROSCOPY
Sample
Mce1 lipid transporter composed of Mce1 MCE proteins (Mce1ABCDEF) and an ABC transporter (YrbE1A-B, 2 copies of MceG)
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles160443
Reported Resolution (Å)2.9
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1
Refinement SpaceREAL
Refinement ProtocolFLEXIBLE FIT
Refinement TargetCross-correlation coefficient
Overall B Value
Fitting Procedure
DetailsModel was initial fitted into the map using Chimera follow-by rigid body refinement in PHENIX. Models were further refined using PHENIX real-space ref ...Model was initial fitted into the map using Chimera follow-by rigid body refinement in PHENIX. Models were further refined using PHENIX real-space refinement and then manually inspected in Coot.
Data Acquisition
Detector TypeGATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å**2)60
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)800
Maximum Defocus (nm)2400
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification105000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONTopaz0.2.3
IMAGE ACQUISITIONSerialEM
CTF CORRECTIONcryoSPARC3.3.1
MODEL FITTINGUCSF Chimerav1.16
INITIAL EULER ASSIGNMENTcryoSPARC3.3.1
FINAL EULER ASSIGNMENTcryoSPARC3.3.1
CLASSIFICATIONcryoSPARC3.3.1
RECONSTRUCTIONcryoSPARC3.3.1
MODEL REFINEMENTPHENIXv1.20.1
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION2869223