7BGB

The H/ACA RNP lobe of human telomerase

ELECTRON MICROSCOPY

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Refinement

RMS Deviations
Key	Refinement Restraint Deviation
r_long_range_B_refined	47.383
r_long_range_B_other	47.382
r_scangle_other	37.207
r_dihedral_angle_2_deg	35.204
r_mcangle_it	34.649
r_mcangle_other	34.649
r_scbond_it	25.643
r_scbond_other	25.642
r_mcbond_it	24.375
r_mcbond_other	24.367
r_dihedral_angle_4_deg	18.769
r_dihedral_angle_3_deg	17.13
r_dihedral_angle_1_deg	7.024
r_angle_refined_deg	1.584
r_angle_other_deg	1.18
r_chiral_restr	0.088
r_bond_refined_d	0.013
r_gen_planes_refined	0.008
r_bond_other_d	0.003
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
Human telomerase H/ACA RNP lobe
Sample Components
ribonucleoprotein and telomerase complex
RNA

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument	FEI VITROBOT MARK IV
Cryogen Name	ETHANE
Sample Vitrification Details	Blot for 4-5 seconds before plunging

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	204665
Reported Resolution (Å)	3.4
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	POINT

Map-Model Fitting and Refinement
Id	1
Refinement Space	RECIPROCAL
Refinement Protocol	AB INITIO MODEL
Refinement Target
Overall B Value	104
Fitting Procedure
Details

Data Acquisition
Detector Type	GATAN K3 (6k x 4k)
Electron Dose (electrons/Å**2)	47

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	FEI TITAN KRIOS
Minimum Defocus (nm)	1200
Maximum Defocus (nm)	3500
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	81000
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
PARTICLE SELECTION	RELION	3.1
IMAGE ACQUISITION	SerialEM
CTF CORRECTION	CTFFIND
MODEL REFINEMENT	REFMAC
INITIAL EULER ASSIGNMENT	RELION	3.1
FINAL EULER ASSIGNMENT	RELION	3.1
CLASSIFICATION	RELION	3.1

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION		15760434