3G7F

Crystal structure of Blastochloris viridis heterodimer mutant reaction center

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2I5N	PDB entry 2i5n

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	MICROBATCH	6	298	Plug-based microfluidics, Precipitant was mixed with buffer and RC sample in a microfluidic chip. The final precipitant concentration was ~1.7 M ammonium sulfate, 0.1% LDAO,30 mM NaH2PO4-Na2HPO4, pH 6.0, 3% 1,2,3-heptanetriol, 1.9% triethylammonium phosphate. RC concentration was ~ 9.4 mg/mL, Microbatch, temperature 298K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 220.132	α = 90
b = 220.132	β = 90
c = 112.744	γ = 90

Symmetry
Space Group	P 43 21 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		2007-02-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 14-BM-C		APS	14-BM-C

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	2.5	50		0.137		7.1		95377

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	2.5	2.59			0.709		6.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	PDB entry 2i5n	2.5	20	90386	4765	99.21	0.17726	0.17574	0.20556	RANDOM	31.995

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]
0.34			0.34		-0.69

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.108
r_dihedral_angle_4_deg	17.105
r_dihedral_angle_3_deg	14.436
r_dihedral_angle_1_deg	5.626
r_scangle_it	2.672
r_scbond_it	1.76
r_angle_refined_deg	1.503
r_mcangle_it	1.186
r_mcbond_it	0.667
r_nbtor_refined	0.314
r_symmetry_vdw_refined	0.251
r_nbd_refined	0.21
r_symmetry_hbond_refined	0.144
r_xyhbond_nbd_refined	0.143
r_chiral_restr	0.095
r_bond_refined_d	0.014
r_gen_planes_refined	0.006
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	9278
Nucleic Acid Atoms
Solvent Atoms	730
Heterogen Atoms	909

Software

Software
Software Name	Purpose
HKL-2000	data collection
CCP4	model building
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling
CCP4	phasing