Experiment: 3KZI

Crystal Structure of Monomeric Form of Cyanobacterial Photosystem II

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3BZ1	PDB ENTRY 3BZ1

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	batch	7	291	PEG 400, PIPES, MES, CaCl2, pH 7, batch, temperature 291.0K

Crystal Properties
Matthews coefficient	Solvent content
3.78	67.44

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 119.89	α = 90
b = 224.69	β = 90
c = 337.28	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 315r		2008-02-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29	0.97915	ESRF	ID29

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	3.6	30	89.2	0.112	0.075	11.35	4.11	53178	47417		1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	3.6	3.7	68.9		0.477	0.638	2.34	4.24	2829

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 3BZ1	3.6	29.87	2.5	47332	946	89.2	0.297	0.297	0.2957	0.308	0.3028	RANDOM	162.6

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]
-16.38			-5.03		21.41

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	18.1
c_scangle_it	7.62
c_scbond_it	6.7
c_angle_deg	2.1
c_mcangle_it	2.01
c_improper_angle_d	1.22
c_mcbond_it	1.14
c_bond_d	0.013

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	20318
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	4360

Software

Software
Software Name	Purpose
ADSC	data collection
PHASER	phasing
CNS	refinement
XDS	data reduction
XDS	data scaling