Experiment: 3C63

Tetrameric Cytochrome cb562 (K34/H59/D62/H63/H73/A74/H77) Assembly Stabilized by Interprotein Zinc Coordination

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2BC5	PDB entry 2BC5

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	293	12% PEG 400, 200 mM CaCl2, 100 mM TRIS, 1.25 mM ZnCl2, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.16	43.14

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 47.966	α = 90
b = 89.899	β = 110.3
c = 49.688	γ = 90

Symmetry
Space Group	P 1 21 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	APEX II CCD	microcapillary collimator	2008-01-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	SIEMENS	1.5418

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	1.75	50	93.3	0.076	0.076	13.5	2.76	39850	37193	2	2	12.2

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)
1	1.75	1.78	82.1		0.51	0.51	1.98	1.14	652

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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		THROUGHOUT	PDB entry 2BC5	1.75	20.24	39850	37193	2618	93.3	0.247	0.199	0.1919	0.247	0.2413	random	13.487

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]
0.421		0.149	-0.287		-0.134

RMS Deviations
Key	Refinement Restraint Deviation
c_scangle_it	3.31
c_scbond_it	2.302
c_mcangle_it	1.525
c_mcbond_it	1.081

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3244
Nucleic Acid Atoms
Solvent Atoms	545
Heterogen Atoms	181

Software

Software
Software Name	Purpose
CNS	refinement
PDB_EXTRACT	data extraction
APEX	data collection
SAINT	data reduction
SAINT	data scaling
MOLREP	phasing