3HAQ

Crystal structure of bacteriorhodopsin mutant I148A crystallized from bicelles

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	hanging drop, bicelle method	3.9	310	2.2 M sodium phosphate, 180 mM 1,6-hexanediol, 3.5 % triethylene glycol, PFPC used as cryoprotectant, pH 3.9, hanging drop, bicelle method, temperature 310K

Crystal Properties
Matthews coefficient	Solvent content
2.74	55.05

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 44.998	α = 90
b = 102.211	β = 90
c = 127.97	γ = 90

Symmetry
Space Group	C 2 2 21

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		2008-04-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.2.1	1.00000	ALS	8.2.1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	2.3	90	94.3	0.103	9.048	3.7		12778

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.3	2.38	92.6		0.442		2.7	1225

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	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	2.3	39.94	12608	1010	93.2	0.182	0.178	0.236	RANDOM	23.687

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]
			0.01		-0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.415
r_dihedral_angle_4_deg	15.941
r_dihedral_angle_3_deg	14.664
r_dihedral_angle_1_deg	5.191
r_scangle_it	3.574
r_scbond_it	2.585
r_angle_refined_deg	2.233
r_mcangle_it	1.502
r_mcbond_it	0.92
r_nbtor_refined	0.312
r_symmetry_vdw_refined	0.221
r_nbd_refined	0.214
r_chiral_restr	0.195
r_xyhbond_nbd_refined	0.149
r_symmetry_hbond_refined	0.079
r_bond_refined_d	0.02
r_gen_planes_refined	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1745
Nucleic Acid Atoms
Solvent Atoms	68
Heterogen Atoms	131

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction