2H88

Avian Mitochondrial Respiratory Complex II at 1.8 Angstrom Resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	277	50 G/L PEG-3350, 25 ML/L ISOPROPANOL, 15 ML/L PEG-400 0.05 M NA-HEPES, 0.01 M TRIS-HCL, 0.0025 M FUMARATE, 0.0005 M MNCL2, 0.0013 M MGCL2, 0.0015 M NA-AZIDE, 0.00025 M NA-EDTA. Type 1 orthorhombic crystalls grew initially, after 1 month these monoclinic crystals appeared., pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
3.3	62.72

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 119.972	α = 90
b = 199.391	β = 90.35
c = 68.063	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	ADSC QUANTUM 315		2005-11-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.2	1.0	ALS	5.0.2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.74	60	91.3	0.122	12.8	3	292236	292236	-999	-3	23.6

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.74	1.77	55.6		0.99	0.89	2	8881

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	rigid body refinement	THROUGHOUT	2FBW	1.74	45.14	291095	291095	14469	89.2	0.1794	0.1794	0.178	0.206	RANDOM	31.7

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]
-3.43		1.16	5.1		-1.67

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	22.7
c_scangle_it	4.6
c_scbond_it	3.23
c_mcangle_it	2.67
c_mcbond_it	2.01
c_angle_deg	1.9
c_improper_angle_d	1.28
c_bond_d	0.024
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	16970
Nucleic Acid Atoms
Solvent Atoms	2030
Heterogen Atoms	414

Software

Software
Software Name	Purpose
CNS	refinement
BOS	data collection
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing