3VI0

Crystal structure of the O intermediate of the L93A mutant of bacteriorhodopsin

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.2	283	membrane fusion method, 2.3 M ammonium sulfate, 0.05M Na-citrate, pH 5.2, VAPOR DIFFUSION, SITTING DROP, temperature 283K

Crystal Properties
Matthews coefficient	Solvent content
3	59.06

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 102.3	α = 90
b = 102.3	β = 90
c = 112.3	γ = 120

Symmetry
Space Group	P 6 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 315	Si (111) double crystal monochromator	2011-06-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL38B1	1	SPring-8	BL38B1

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	2.2	47.4	99.8	0.113	0.117	15.1	14.9	18163	18113	2.5	2.5	37.3

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	pdb entry 3vhz	2.3	15	15938	15136	715	95	0.288	0.288	0.3481	RANDOM	39.5801

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]
-7.433	-7.185		-7.433		14.867

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	18.15021
c_angle_deg	1.2136
c_mcangle_it	0.84486
c_bond_d	0.007906

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1753
Nucleic Acid Atoms
Solvent Atoms	29
Heterogen Atoms	123

Software

Software
Software Name	Purpose
ADSC	data collection
CNS	refinement
MOSFLM	data reduction
SCALA	data scaling
CNS	phasing

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.