8PEU

Rho-ATPgS-Psu complex I

ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1PV4
experimental model	PDB	3RX6

Refinement

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	5.3589
f_angle_d	0.6241
f_chiral_restr	0.0429
f_plane_restr	0.0038
f_bond_d	0.0024

Sample
Complex of E. coli transcription termination factor Rho with the ATP analog, ATPgammaS and P4 polarity suppression protein Psu
Sample Components
Transcription termination factor Rho
Polarity suppression protein

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument	FEI VITROBOT MARK IV
Cryogen Name	NITROGEN
Sample Vitrification Details

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	73056
Reported Resolution (Å)	3.7
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	POINT
Point Symmetry	C1

Map-Model Fitting and Refinement
Id	1 (1PV4, 3RX6)
Refinement Space	REAL
Refinement Protocol
Refinement Target	Cross-correlation coefficient
Overall B Value
Fitting Procedure
Details	Crystal structures of Rho (PDB ID: 1PV4) and Psu (PDB ID: 3RX6) were manually placed in the cryoEM reconstructions and each protomer was adjusted by r ...	Crystal structures of Rho (PDB ID: 1PV4) and Psu (PDB ID: 3RX6) were manually placed in the cryoEM reconstructions and each protomer was adjusted by rigid body fitting and segmental real-space refinement using Coot (version 0.9.6). The models were refined by iterative rounds of real space refinement in PHENIX (version 1.20_4459) and manual adjustment in Coot.

Data Acquisition
Detector Type	FEI FALCON III (4k x 4k)
Electron Dose (electrons/Å**2)	42

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	FEI TITAN KRIOS
Minimum Defocus (nm)	900
Maximum Defocus (nm)	2000
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
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
PARTICLE SELECTION	cryoSPARC	v3.2.0
IMAGE ACQUISITION	EPU	2.9
CTF CORRECTION	cryoSPARC	v3.2.0
MODEL FITTING	Coot	0.9.6
INITIAL EULER ASSIGNMENT	cryoSPARC	v3.2.0
FINAL EULER ASSIGNMENT	cryoSPARC	v3.3.0
CLASSIFICATION	cryoSPARC	v3.3.0
RECONSTRUCTION	cryoSPARC	v3.3.0
MODEL REFINEMENT	PHENIX	1.20.4459

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION		1815462

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.