7V94

Cryo-EM structure of the Cas12c2-sgRNA-target DNA ternary complex

ELECTRON MICROSCOPY

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Refinement

RMS Deviations
Key	Refinement Restraint Deviation
r_long_range_B_refined	41.075
r_long_range_B_other	41.074
r_dihedral_angle_2_deg	29.752
r_dihedral_angle_3_deg	19.844
r_dihedral_angle_4_deg	16.607
r_scangle_other	14.079
r_mcangle_it	12.024
r_mcangle_other	12.023
r_scbond_other	8.575
r_scbond_it	8.574
r_mcbond_it	7.903
r_mcbond_other	7.903
r_dihedral_angle_1_deg	5.505
r_angle_refined_deg	1.456
r_angle_other_deg	1.428
r_chiral_restr	0.076
r_bond_other_d	0.029
r_bond_refined_d	0.008
r_gen_planes_refined	0.008
r_gen_planes_other	0.003
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Sample
Cas12c2-sgRNA-DNA complex
Sample Components
Cas12c2
sgRNA
DNA

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument
Cryogen Name	ETHANE
Sample Vitrification Details

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	534196
Reported Resolution (Å)	2.7
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	POINT
Point Symmetry	C1

Map-Model Fitting and Refinement
Id	1
Refinement Space	RECIPROCAL
Refinement Protocol	AB INITIO MODEL
Refinement Target
Overall B Value
Fitting Procedure
Details

Data Acquisition
Detector Type	GATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å**2)	50

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	FEI TITAN KRIOS
Minimum Defocus (nm)	800
Maximum Defocus (nm)	1600
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging Mode	BRIGHT FIELD
Specimen Holder Model
Nominal Magnification
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
IMAGE ACQUISITION	SerialEM
CTF CORRECTION	CTFFIND
MODEL FITTING	Buccaneer
MODEL FITTING	Coot
INITIAL EULER ASSIGNMENT	RELION	3
FINAL EULER ASSIGNMENT	RELION	3
CLASSIFICATION	RELION	3
RECONSTRUCTION	RELION	3
MODEL REFINEMENT	REFMAC

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