3M9I

Electron crystallographic structure of lens Aquaporin-0 (AQP0) (lens MIP) in E. coli polar lipids

ELECTRON CRYSTALLOGRAPHY

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2B6O	PDB entry 2B6O

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	MICRODIALYSIS	6	300	100 mM NaCl, 50mM MgCl2, 10mM MES pH 6.0, MICRODIALYSIS, temperature 300K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 65.5	α = 90
b = 65.5	β = 90
c = 200	γ = 90

Symmetry
Space Group	P 4 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1		279	CCD	Gatan		2009-02-24

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ELECTRON MICROSCOPE	OTHER

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	2.5	15.89	92.3	0.226	0.189		8.1	14417	14417			14.9

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.5	2.66	83.7			4	1935

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
ELECTRON CRYSTALLOGRAPHY	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 2B6O	2.5	15.89	14254	14254	1453	89.8	0.25	0.25	0.25	0.2656	0.284	0.2973	RANDOM	48.6

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]
-9.84			-9.84		19.68

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	19.7
c_improper_angle_d	5.98
c_angle_deg	1.8
c_bond_d	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1668
Nucleic Acid Atoms
Solvent Atoms	8
Heterogen Atoms	273

Software

Software
Software Name	Purpose
Gatan	data collection
PHASER	phasing
CNS	refinement

Sample
lens Aquaporin 0

Specimen Preparation
Sample Aggregation State	2D ARRAY

3D Reconstruction
Reconstruction Method	CRYSTALLOGRAPHY

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

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

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 R01GM157729.