3QKG

Crystal structure of alpha-1-microglobulin at 2.3 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7	293	100 mM Tris-HCl, 1.1 M sodium citrate, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.32	47.06

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.721	α = 90
b = 66.721	β = 90
c = 80.255	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	105	CCD	MARMOSAIC 225 mm CCD		2011-04-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	BESSY BEAMLINE 14.1	0.9184	BESSY	14.1

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	2.17	46.89	96.5	0.073		10.4		10877	2.5

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	2.17	2.29	80		1.38		7.3

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2.3	46.89	8341	9044	452	99.33	0.21478	0.2126	0.25952	RANDOM	71.936

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]
-2.35	-1.17		-2.35		3.52

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.585
r_dihedral_angle_4_deg	24.331
r_dihedral_angle_3_deg	20.913
r_dihedral_angle_1_deg	7.447
r_scangle_it	4.428
r_scbond_it	2.708
r_angle_refined_deg	1.703
r_mcangle_it	1.674
r_mcbond_it	0.896
r_chiral_restr	0.114
r_bond_refined_d	0.017
r_gen_planes_refined	0.008
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
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_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1317
Nucleic Acid Atoms
Solvent Atoms	47
Heterogen Atoms	7

Software

Software
Software Name	Purpose
MAR345dtb	data collection
MrBUMP	phasing
REFMAC	refinement
XDS	data reduction
SCALA	data scaling