3NSB

Structure of bacteriorhodopsin ground state before and after X-ray modification

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1C3W	PDB ENTRY 1C3W

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5.6	293	monoolein meso phase, K/Na-Pi as a precipitant, pH 5.6, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.19	43.92

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 60.995	α = 90
b = 60.995	β = 90
c = 109.991	γ = 120

Symmetry
Space Group	P 63

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 210		2005-07-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1		ESRF	ID14-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.78	30.1	99.7	0.058	20.3	5.5		22171			21.9

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.78	1.88	99.6		0.539	3.3	5.3

Refinement

Statistics
Diffraction ID	Structure Solution 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	PDB ENTRY 1C3W	1.78	30.1	19842	19842	997		0.209	0.209	0.225	RANDOM	26.3

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]
-2.24			-2.24		4.48

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	20.8
c_angle_deg	2.06
c_improper_angle_d	1.37
c_bond_d	0.015
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot
c_mcbond_it
c_mcangle_it
c_scbond_it
c_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1725
Nucleic Acid Atoms
Solvent Atoms	39
Heterogen Atoms	88

Software

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