4A7H | pdb_00004a7h

Structure of the Actin-Tropomyosin-Myosin Complex (rigor ATM 2)

ELECTRON MICROSCOPY

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Starting Model(s)

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

Sample
F-ACTIN-MYO1E-TROPOMYOSIN COMPLEX (CONFORMATION 2)

Specimen Preparation
Sample Aggregation State	FILAMENT
Vitrification Instrument	GATAN CRYOPLUNGE 3
Cryogen Name	ETHANE
Sample Vitrification Details	VITRIFICATION 1 -- CRYOGEN- ETHANE, HUMIDITY- 90, TEMPERATURE- 101, INSTRUMENT- GATAN CRYOPLUNGE 3, METHOD- MANUAL BLOTTING FOR APPROXIMATELY 15 SECONDS,

3D Reconstruction
Reconstruction Method	HELICAL
Number of Particles	9650
Reported Resolution (Å)	7.8
Resolution Method
Other Details	SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-1988 (DEPOSITION ID: 10379).
Refinement Type
Symmetry Type	HELICAL

Map-Model Fitting and Refinement
Id	1 (3MFP, 1LKX)
Refinement Space	REAL
Refinement Protocol	FLEXIBLE FIT
Refinement Target
Overall B Value
Fitting Procedure
Details	METHOD--GEOMETRY-BASED CONFORMATIONAL SAMPLING USING DEFORMABLE ELASTIC NETWORK (DEN) APPROACH REFINEMENT PROTOCOL--EM

Data Acquisition
Detector Type	TVIPS TEMCAM-F816 (8k x 8k)
Electron Dose (electrons/Å**2)	1.7

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)	77
Microscope Model	JEOL 3200FSC
Minimum Defocus (nm)	750
Maximum Defocus (nm)	1500
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS	4.1
Imaging Mode	BRIGHT FIELD
Specimen Holder Model
Nominal Magnification	80000
Calibrated Magnification	169644
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	200
Imaging Details	BEST 836 MICROGRAPHS WERE SELECTED FROM OVER 3000 AQUIRED IMAGES

EM Software
Task	Software Package	Version
MODEL FITTING	DireX
RECONSTRUCTION	SPARX

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
	EACH PARTICLE