Experiment: 7UZW

Staphylococcus epidermidis RP62a CRISPR effector subcomplex

ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	6NBT

Sample
Staphylococcus epidermidis RP62a CRISPR effector subcomplex

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument	FEI VITROBOT MARK IV
Cryogen Name	ETHANE
Sample Vitrification Details	3 ul of the protein-RNA complex were added to the grid and allowed to incubate for 10 seconds. After incubation the grid was blotted in a Vitrobot Mar ...	3 ul of the protein-RNA complex were added to the grid and allowed to incubate for 10 seconds. After incubation the grid was blotted in a Vitrobot Mark IV (FEI Thermo Fischer) (humidity 95% and temperature 4 C) for 3 seconds with a force of 0 before plunge freezing in liquid ethane.

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	205747
Reported Resolution (Å)	3.55
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	POINT
Point Symmetry	C1

Map-Model Fitting and Refinement
Id	1 (6NBT, 6NBT, 6NBT, 6NBT, 6NBT)
Refinement Space	REAL
Refinement Protocol	OTHER
Refinement Target
Overall B Value
Fitting Procedure
Details

Data Acquisition
Detector Type	GATAN K3 (6k x 4k)
Electron Dose (electrons/Å**2)	49.5

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	TFS KRIOS
Minimum Defocus (nm)	1500
Maximum Defocus (nm)	2500
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging Mode	BRIGHT FIELD
Specimen Holder Model	FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification
Calibrated Magnification	44454
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
PARTICLE SELECTION	cryoSPARC
IMAGE ACQUISITION	EPU
CTF CORRECTION	cryoSPARC
MODEL FITTING	UCSF Chimera
INITIAL EULER ASSIGNMENT	cryoSPARC
FINAL EULER ASSIGNMENT	cryoSPARC
CLASSIFICATION	cryoSPARC
RECONSTRUCTION	cryoSPARC
MODEL REFINEMENT	PHENIX	1.18.2

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION		2368249