3FJT

Crystal structure of a human Fc fragment engineered for extended serum half-life

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	298	15% PEG 6000, 5% MPD, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3.03	59.37

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.66	α = 90
b = 79.605	β = 90
c = 145.59	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	IMAGE PLATE	RIGAKU RAXIS IV++		2008-05-06		SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU FR-E+ SUPERBRIGHT	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.492	72.739	92.4	0.1	0.1	7.4	3.9	20852	19236			66

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.492	2.58	93.2		0.44	0.44	2.7	3.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	2.5	12	19134	988	93.48	0.23	0.227	0.291	RANDOM	63.806

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]
-2.11			-2.13		4.24

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.318
r_dihedral_angle_3_deg	16.671
r_dihedral_angle_4_deg	15.13
r_dihedral_angle_1_deg	7.268
r_sphericity_free	5.34
r_rigid_bond_restr	3.121
r_scangle_it	2.232
r_scbond_it	1.86
r_mcangle_it	1.567
r_mcbond_it	1.424
r_angle_refined_deg	1.412
r_sphericity_bonded	1.27
r_angle_other_deg	0.851
r_symmetry_vdw_other	0.253
r_nbd_refined	0.199
r_nbd_other	0.191
r_mcbond_other	0.187
r_nbtor_refined	0.18
r_symmetry_vdw_refined	0.178
r_xyhbond_nbd_refined	0.158
r_symmetry_hbond_refined	0.151
r_nbtor_other	0.088
r_chiral_restr	0.075
r_bond_refined_d	0.012
r_gen_planes_refined	0.004
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3350
Nucleic Acid Atoms
Solvent Atoms	68
Heterogen Atoms	198

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction