7JI0

CryoEM structure of Streptococcus thermophilus SHP pheromone receptor Rgg3 in complex with SHP3

ELECTRON MICROSCOPY

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Sample
Streptococcus thermophilus SHP pheromone receptor Rgg3 in complex with SHP3

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument	FEI VITROBOT MARK IV
Cryogen Name	ETHANE
Sample Vitrification Details	2.5 microliters Rgg3St-SHP3 was applied to glow-discharged UltraAuFoil (1.2/1.3) 300-mesh grids (Quantifoil), blotted with filter paper for 3-3.5 s, and flash-frozen by plunging in liquid ethane cooled with liquid nitrogen. Grids were stored in liquid nitrogen.

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	44069
Reported Resolution (Å)	2.95
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	POINT

Map-Model Fitting and Refinement
Id	1 (6W1E)
Refinement Space	REAL
Refinement Protocol	FLEXIBLE FIT
Refinement Target
Overall B Value
Fitting Procedure
Details

Data Acquisition
Detector Type	GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)	47.13

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	FEI TALOS ARCTICA
Minimum Defocus (nm)
Maximum Defocus (nm)
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS	2.7
Imaging Mode	BRIGHT FIELD
Specimen Holder Model	FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification	130000
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	200
Imaging Details

EM Software
Task	Software Package	Version
PARTICLE SELECTION	cryoSPARC	2.13.2
IMAGE ACQUISITION	EPU	1.x
CTF CORRECTION	cryoSPARC	2.13.2
MODEL FITTING	UCSF Chimera
MODEL REFINEMENT	PHENIX
INITIAL EULER ASSIGNMENT	cryoSPARC	2.13.2
FINAL EULER ASSIGNMENT	cryoSPARC	2.13.2
RECONSTRUCTION	cryoSPARC	2.13.2

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION		389743