3H9Z

Crystal structure of the IgE-Fc3-4 domains

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.3	293	1 microliter of protein at 10 mg/mL in 20 mM sodium chloride was added to 1 microliter of well solution (100 mM ammonium acetate, 100 mM sodium acetate pH 4.6, 30% (w/v) PEG 4000) and mixed by pipetting., VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.52	51.18

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 65.66	α = 90
b = 99.352	β = 97.4
c = 77.639	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	113	CCD	MAR CCD 130 mm		1999-08-07	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 5ID-B	1.0001	APS	5ID-B

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	2.45	30	98.2	0.059	18.425	3.63	36017	36017

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.45	2.54	82.3		0.241		2.28

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 1FP5	2.45	28.71	35946	35946	1824	98.75	0.23182	0.22936	0.27748	RANDOM	31.781

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]
0.57		0.21	0.55		-1.06

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	28
r_dihedral_angle_4_deg	15.758
r_dihedral_angle_3_deg	14.975
r_dihedral_angle_1_deg	6.204
r_mcangle_it	2.569
r_scangle_it	2.179
r_mcbond_it	1.522
r_angle_refined_deg	1.448
r_scbond_it	1.396
r_angle_other_deg	0.746
r_mcbond_other	0.277
r_chiral_restr	0.083
r_bond_refined_d	0.01
r_gen_planes_refined	0.004
r_bond_other_d	0.001
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_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6624
Nucleic Acid Atoms
Solvent Atoms	146
Heterogen Atoms	184

Software

Software
Software Name	Purpose
REFMAC	refinement
SCALEPACK	data scaling
CNS	refinement
DENZO	data reduction
PDB_EXTRACT	data extraction
MAR345	data collection
CNS	phasing