8COG

Human arginylated beta-actin

ELECTRON MICROSCOPY

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Refinement

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.528
r_lrange_it	36.106
r_lrange_other	36.105
r_scangle_it	21.726
r_scangle_other	21.721
r_dihedral_angle_4_deg	17.907
r_dihedral_angle_3_deg	17.594
r_mcangle_it	17.088
r_mcangle_other	17.085
r_scbond_it	12.834
r_scbond_other	12.834
r_mcbond_it	10.347
r_mcbond_other	10.345
r_dihedral_angle_1_deg	7.048
r_angle_refined_deg	1.635
r_angle_other_deg	1.342
r_nbd_refined	0.21
r_symmetry_nbd_other	0.193
r_nbtor_refined	0.166
r_xyhbond_nbd_refined	0.155
r_symmetry_nbtor_other	0.077
r_chiral_restr	0.071
r_symmetry_xyhbond_nbd_other	0.06
r_bond_refined_d	0.009
r_gen_planes_refined	0.007
r_gen_planes_other	0.003
r_bond_other_d	0.001

Sample
Polymerised arginylated actin with bound ADP

Specimen Preparation
Sample Aggregation State	HELICAL ARRAY
Vitrification Instrument	LEICA EM GP
Cryogen Name	ETHANE-PROPANE
Sample Vitrification Details

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	42701
Reported Resolution (Å)	3.499
Resolution Method	FSC 0.143 CUT-OFF
Other Details	RELION 3.09 was used throughout using helical reconstruction.
Refinement Type
Symmetry Type	POINT

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

Data Acquisition
Detector Type	GATAN K2 SUMMIT (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)	700
Maximum Defocus (nm)	1500
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	75000
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
PARTICLE SELECTION	RELION	3.09
CTF CORRECTION	RELION
MODEL FITTING	Coot
MODEL REFINEMENT	REFMAC

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