4RA3

Crystal structure of dimeric S33C beta-2 microglobulin mutant in complex with Thioflavin (ThT) at 2.8 Angstrom resolution

X-RAY DIFFRACTION

---

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3S6C	PDB ENTRY 3S6C

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8	293	25% v/v PEG4000, 0.1 M sodium chloride, 5 mM thioflavin, 0.1 M HEPES sodium, pH 8.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.45	64.38

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 80.038	α = 90
b = 80.038	β = 90
c = 177.7	γ = 120

Symmetry
Space Group	P 32 2 1

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		2014-01-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PETRA III, EMBL c/o DESY BEAMLINE P13 (MX1)	0.97088	PETRA III, EMBL c/o DESY	P13 (MX1)

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	177.7	100	0.059	21.4	9.6	16940	16940

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	2.8	2.95	100		1.139	2	10

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 3S6C	2.8	69.31	16940	16036	862	99.91	0.17252	0.17075	0.20649	RANDOM	113.054

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]
26.34			26.34		-52.68

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	42.454
r_dihedral_angle_4_deg	28.387
r_dihedral_angle_3_deg	21.408
r_long_range_B_refined	13.135
r_long_range_B_other	13.133
r_scangle_other	10.519
r_dihedral_angle_1_deg	9.926
r_mcangle_it	9.81
r_mcangle_other	9.734
r_scbond_it	7.33
r_scbond_other	7.204
r_mcbond_it	6.823
r_mcbond_other	6.819
r_angle_other_deg	1.548
r_angle_refined_deg	1.453
r_chiral_restr	0.084
r_bond_refined_d	0.01
r_gen_planes_refined	0.007
r_gen_planes_other	0.002
r_bond_other_d	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3307
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	100

Software

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