1MHS

Model of Neurospora crassa proton ATPase

ELECTRON CRYSTALLOGRAPHY

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 167	α = 90
b = 167	β = 90
c = 250	γ = 120

Symmetry
Space Group	P 3 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	electron

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic B
ELECTRON CRYSTALLOGRAPHY		8

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	14082
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms

Sample
Neurospora ATPase hexamer crystal
Sample Components
plasma membrane proton ATPase hexameric assembly

Specimen Preparation
Sample Aggregation State	2D ARRAY
Vitrification Instrument
Cryogen Name
Sample Vitrification Details	2D crystals were vitrified by immersion in liquid nitrogen

3D Reconstruction
Reconstruction Method	CRYSTALLOGRAPHY
Number of Particles
Reported Resolution (Å)	8
Resolution Method
Other Details
Refinement Type
Symmetry Type	2D CRYSTAL

Map-Model Fitting and Refinement
Id	1
Refinement Space	REAL
Refinement Protocol	OTHER
Refinement Target	best visual fit using the program o
Overall B Value
Fitting Procedure
Details	METHOD--manual REFINEMENT PROTOCOL--manual fit

Data Acquisition
Detector Type	KODAK SO-163 FILM
Electron Dose (electrons/Å**2)	25

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)	4
Microscope Model	JEOL 3000SFF
Minimum Defocus (nm)	600
Maximum Defocus (nm)	1200
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)	60
Nominal CS	1.6
Imaging Mode	BRIGHT FIELD
Specimen Holder Model
Nominal Magnification	50000
Calibrated Magnification	50000
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details	Images were also recorded on JEOL 2000 EX and Philips CM200 FEG electron microscopes at 80 K at a dose of 1000 e/nm**2

EM Software
Task	Software Package	Version
RECONSTRUCTION	MRC

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

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.