4RAH

Crystal structure of dimeric S33C beta-2 microglobulin mutant at 1.4 Angstrom resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	293	28% v/v PEG400, 0.2 M calcium chloride dihydrate, 0.1 M HEPES sodium, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.94	36.61

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 32.349	α = 90
b = 47.704	β = 90
c = 119.65	γ = 90

Symmetry
Space Group	C 2 2 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	110	PIXEL	DECTRIS PILATUS 6M	bent cylindrical mirror	2014-06-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1	0.976256	ESRF	ID23-1

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	1.4	59.825	98.7	0.065	10.9	4.5	18734	18491			8.7

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)
1	1.4	1.42	86.6		0.495	1.9	3.4	787

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	MOLECULAR REPLACEMENT	THROUGHOUT	1.4	59.825	18734	17542	912	98.57	0.16851	0.16851	0.16625	0.20944	RANDOM	16.81

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]
-0.24			0.16		0.08

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.818
r_dihedral_angle_4_deg	15.691
r_dihedral_angle_3_deg	12.853
r_sphericity_free	8.777
r_dihedral_angle_1_deg	7.097
r_rigid_bond_restr	5.997
r_sphericity_bonded	4.918
r_scbond_it	2.604
r_long_range_B_refined	2.547
r_scbond_other	2.455
r_long_range_B_other	2.441
r_angle_other_deg	2.336
r_scangle_other	2.299
r_angle_refined_deg	1.919
r_mcbond_it	1.91
r_mcangle_other	1.907
r_mcangle_it	1.872
r_mcbond_other	1.871
r_chiral_restr	0.113
r_bond_refined_d	0.02
r_gen_planes_other	0.013
r_gen_planes_refined	0.011
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	828
Nucleic Acid Atoms
Solvent Atoms	137
Heterogen Atoms

Software

Software
Software Name	Purpose
MxCuBE	data collection
BALBES	phasing
REFMAC	refinement
XDS	data reduction
Aimless	data scaling