4CDH

Crystallographic structure of the Human Igg1 alpha 2-6 sialilated Fc-Fragment

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		298	CRYSTALLIZATION TRIALS WERE PERFORMED AT 18 C BY THE SITTING DROP VAPOUR DIFFUSION METHOD. CRYSTALS GROWN BY MIXING 1 UL OF FC-SIAL (9 MG/ML IN PBS) WITH 3 UL OF PRECIPITANT SOLUTION CONSISTING OF 0.1M HEPES PH7, 16% PEG 6000, VAPOR DIFFUSION, TEMPERATURE 298K

Crystal Properties
Matthews coefficient	Solvent content
2.74	55.06

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.59	α = 90
b = 80.15	β = 90
c = 140.21	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					M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF		ESRF	ID23-1

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	2.3	20.1	100	0.09	11.7	6.4		24279		2

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	OTHER	THROUGHOUT	NONE	2.3	20.1	24279	1300	99.96	0.23647	0.23398	0.28215	RANDOM	43.124

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]
-0.89			0.32		0.57

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.128
r_dihedral_angle_3_deg	20.289
r_dihedral_angle_4_deg	14.417
r_dihedral_angle_1_deg	8.158
r_angle_refined_deg	2.069
r_angle_other_deg	0.911
r_chiral_restr	0.107
r_bond_refined_d	0.016
r_gen_planes_refined	0.009
r_bond_other_d	0.001
r_gen_planes_other	0.001
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_it
r_mcbond_other
r_mcangle_it
r_mcangle_other
r_scbond_it
r_scbond_other
r_scangle_it
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3316
Nucleic Acid Atoms
Solvent Atoms	82
Heterogen Atoms	221

Software

Software
Software Name	Purpose
REFMAC	refinement