1MSC

CRYSTAL STRUCTURE OF MS2 COAT PROTEIN DIMER

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				COMPND MOLECULE: MS2 UNASSEMBLED COAT PROTEIN DIMER. THIS BACTERIOPHAGE COAT PROTEIN WAS CRYSTALLIZED AS AN UNASSEMBLED DIMER; IT DID NOT FORM VIRAL CAPSIDS.

Crystal Properties
Matthews coefficient	Solvent content
2.2	44.02

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 76.2	α = 90
b = 55.7	β = 90
c = 28.4	γ = 90

Symmetry
Space Group	P 21 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray					1993-12-07	M

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	2.03	55	90	0.031		3.2		7447

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		2	8	3	6668		90	0.2			34.47

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
p_orthonormal_tor	42.1
p_staggered_tor	24.1
p_planar_tor	3.8
p_multtor_nbd	0.292
p_xhyhbond_nbd	0.287
p_singtor_nbd	0.239
p_angle_d	0.066
p_planar_d	0.051
p_bond_d	0.021
p_plane_restr	0.018
p_angle_deg
p_hb_or_metal_coord
p_mcbond_it
p_mcangle_it
p_scbond_it
p_scangle_it
p_chiral_restr
p_xyhbond_nbd
p_transverse_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	962
Nucleic Acid Atoms
Solvent Atoms	111
Heterogen Atoms

Software

Software
Software Name	Purpose
PROLSQ	refinement
XENGEN	data reduction
NIELSEN	data reduction
XUONG)	data reduction