4L4J

Crystal structure of fc-fragment of human IgG2-Sigma antibody

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4.5	293	0.1 M SODIUM ACETATE, 18% PEG 3350, 0.2 M SODIUM FORMATE. CRYO CONDITIONS: 0.1 M SODIUM ACETATE, 20% PEG 3350, 0.2 M SODIUM FORMATE, 20% GLYCEROL, pH 4.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.71	54.64

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 68.54	α = 90
b = 69.97	β = 90
c = 112.25	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	RIGAKU SATURN 944	VARIMAX HF	2011-11-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF

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	1.9	30	97.2	0.059	22	6.8	40887	40887		-3	27

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	1.9	1.97	72.9		0.351	3.2	3.3

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 4HAF	1.92	15	39744	39744	1051	94.6	0.20085	0.19963	0.24652	RANDOM	39.9

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]
2.65			-1.17		-1.48

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.215
r_scangle_it	26.772
r_scbond_it	26.539
r_dihedral_angle_4_deg	20.118
r_dihedral_angle_3_deg	13.292
r_dihedral_angle_1_deg	5.836
r_mcangle_it	5.101
r_mcbond_it	3.284
r_angle_refined_deg	1.288
r_chiral_restr	0.083
r_bond_refined_d	0.01
r_gen_planes_refined

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3089
Nucleic Acid Atoms
Solvent Atoms	409
Heterogen Atoms	155

Software

Software
Software Name	Purpose
StructureStudio	data collection
PHASER	phasing
REFMAC	refinement
XDS	data reduction
XDS	data scaling