5LGK

Crystal structure of the human IgE-Fc bound to its B cell receptor derCD23

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4EZM	4EZM, 2WQR and 4J6J
experimental model	PDB	2WQR	4EZM, 2WQR and 4J6J
experimental model	PDB	4J6J	4EZM, 2WQR and 4J6J

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		294	15% (w/v) PEG 8,000, 0.1 M sodium citrate, 0.05 M ammonium sulfate

Crystal Properties
Matthews coefficient	Solvent content
2.92	57.87

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 80.52	α = 117.87
b = 85.32	β = 90.32
c = 88.23	γ = 112.62

Symmetry
Space Group	P 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS PILATUS3 6M		2012-04-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I03	0.9763	Diamond	I03

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	3.5	76	89.3	0.319	2.1	1.7		21032

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	3.5	3.69			0.758

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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	4EZM, 2WQR and 4J6J	3.5	75.96	20922	1087	88.83	0.2665	0.2659	0.2784	RANDOM	36.63

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]
10.8689	7.9391	7.5666	-13.3133	-8.9135	2.4444

RMS Deviations
Key	Refinement Restraint Deviation
t_other_torsion	20.23
t_omega_torsion	1.11
t_angle_deg	0.84
t_bond_d	0.007
t_dihedral_angle_d
t_trig_c_planes
t_gen_planes
t_it
t_nbd
t_improper_torsion
t_pseud_angle
t_chiral_improper_torsion
t_sum_occupancies
t_utility_distance
t_utility_angle
t_utility_torsion
t_ideal_dist_contact

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	11314
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	106

Software

Software
Software Name	Purpose
Aimless	data scaling
PHASER	phasing
BUSTER-TNT	refinement
PDB_EXTRACT	data extraction
iMOSFLM	data reduction
PHASER	phasing