5MSF

MS2 PROTEIN CAPSID/RNA COMPLEX

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.4	300	PROTEIN IN 1.25% OR 1.5% PEG 8000, 0.1M NA PHOSPHATE PH 7.4 AND 0.02% NA AZIDE WAS EQUILIBRATED AGAINST 0.35M OR 0.4M NA PHOSPHATE PH 7.4, 0.02% NA AZIDE AT 300 OR 370 C. WASHED CRYSTALS WERE SOAKED IN 2MG/ML RNA.

Crystal Properties
Matthews coefficient	Solvent content
	80

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 287.3	α = 90
b = 287.3	β = 90
c = 651.6	γ = 120

Symmetry
Space Group	H 3 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	278	IMAGE PLATE	MARRESEARCH		1997-09-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID2		ESRF	ID2

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	2.8	30	69	0.185	3	2		172487			44.7

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)
	2.8	2.95	34		0.361	1.9	1.3

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-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	DIFFERENCE FOURIER	THROUGHOUT	PDB ENTRY 2MS2	2.8	30	172479	172479	6927	68.3	0.188	0.197	RANDOM	37.1

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]

RMS Deviations
Key	Refinement Restraint Deviation
x_scangle_it	10.69
x_scbond_it	8.87
x_mcangle_it	7.69
x_mcbond_it	5.64
x_angle_deg	1.38
x_bond_d	0.006
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d
x_improper_angle_d_na
x_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2908
Nucleic Acid Atoms	729
Solvent Atoms	101
Heterogen Atoms

Software

Software
Software Name	Purpose
CCP4	model building
X-PLOR	refinement
MOSFLM	data reduction
CCP4	data scaling
CCP4	phasing