4H99

Bacterial Photosynthetic Reaction Center from Rhodobacter sphaeroides with ILE M265 replaced with THR

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	291	drop: 14 mg/mL protein, 0.8 M potassium phosphate, 5 mM Tris, 5 uM EDTA, 3.2% 1,2,3-heptanetriol, 2.0% dioxane, 140 mM sodium chloride, 0.045% LDAO, reservoir: 1.6 M potassium phosphate, cryoprotectant: 28% ethylene glycol, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
5.66	78.27

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 138.87	α = 90
b = 138.87	β = 90
c = 185.49	γ = 120

Symmetry
Space Group	P 31 2 1

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	MARMOSAIC 300 mm CCD		2010-03-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-D		APS	21-ID-D

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	2.97	120.265	99.2	0.094	15.79			42919		-3	62.36

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	2.97	3.05	99.9		0.762	2.22

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 1PCR	2.97	19.77	42918	2146	100	0.174	0.174	0.194	53.84

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]
0.18	0.09		0.18		-0.27

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.22
r_dihedral_angle_4_deg	23.732
r_dihedral_angle_3_deg	22.442
r_dihedral_angle_1_deg	8.747
r_scangle_it	5.553
r_scbond_it	3.589
r_angle_refined_deg	3.196
r_mcangle_it	2.28
r_mcbond_it	1.212
r_chiral_restr	0.189
r_bond_refined_d	0.035
r_gen_planes_refined	0.014
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
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	6465
Nucleic Acid Atoms
Solvent Atoms	52
Heterogen Atoms	488

Software

Software
Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
REFMAC	phasing
XSCALE	data scaling