3LS0 | pdb_00003ls0

Crystal Structure of Cyanobacterial PsbQ from Synechocystis sp. PCC 6803

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	291	25% PEG 1450, 0.1M MES-NAOH, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K
2	VAPOR DIFFUSION, HANGING DROP	7	291	25% PEG 1450, 0.05M MES, 0.05M TRIS-HCL, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 28.332	α = 90
b = 46.787	β = 90
c = 93.51	γ = 90

Symmetry
Space Group	P 21 21 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 Omega 180		2009-08-28	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	ADSC Omega 180		2009-08-28	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	AUSTRALIAN SYNCHROTRON BEAMLINE MX2	0.95364	Australian Synchrotron	MX2
2	SYNCHROTRON	AUSTRALIAN SYNCHROTRON BEAMLINE MX2	0.96064,0.97984	Australian Synchrotron	MX2

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	1.8	19.13	99.9	0.061	24.8	9.8	12135	12135

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)
	1.8	1.9	100		0.395	5.8	9.7	1730

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.8	18.71	12092	578	99.89	0.169	0.167	0.1947	0.208	0.223	RANDOM	21.23

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]
1.33			-0.5		-0.83

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.101
r_dihedral_angle_4_deg	19.239
r_dihedral_angle_3_deg	14.36
r_scangle_it	6.03
r_dihedral_angle_1_deg	4.268
r_scbond_it	3.911
r_angle_refined_deg	2.193
r_mcangle_it	1.931
r_mcbond_it	1.203
r_chiral_restr	0.155
r_bond_refined_d	0.028
r_gen_planes_refined	0.013

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	905
Nucleic Acid Atoms
Solvent Atoms	109
Heterogen Atoms

Software

Software
Software Name	Purpose
SCALA	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
SHELX	phasing