Experiment: 3MUU

Crystal structure of the Sindbis virus E2-E1 heterodimer at low pH

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5.6	293	PEG8000 10%, Sodium/Potassium Tartrate 325 mM, Sodium/Potassium Phosphate 100 mM pH5.6, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.01	59.16

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 67.482	α = 60.42
b = 158.43	β = 89.8
c = 160.676	γ = 89.65

Symmetry
Space Group	P 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		2009-10-31	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-B	0.97934,0.97951,0.94934	APS	23-ID-B

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	3.3	70	97.3	0.128	0.128	12.5	3.8		162989		-3

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)
	3.3	3.36	82.9		0.658	0.658	1.8	3.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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)	Mean Isotropic B
X-RAY DIFFRACTION	MAD	3.29	60.72	1.96	176472	162989	8227	92.4	0.24	0.239	0.2379	0.252	0.2496

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]
40.8597	-2.2902	-0.2614	-15.5516	5.1022	-25.3081

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	23.492
f_angle_d	1.235
f_chiral_restr	0.08
f_bond_d	0.007
f_plane_restr	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	28537
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	622

Software

Software
Software Name	Purpose
HKL-2000	data collection
SHARP	phasing
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling