3GIZ

Crystal structure of the Fab fragment of anti-CD20 antibody Ofatumumab

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.3	277	0.2 M zinc acetate, 20% PEG3350, pH 6.3, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.75	55.21

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 136.33	α = 90
b = 55.944	β = 122.17
c = 79.78	γ = 90

Symmetry
Space Group	C 1 2 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	IMAGE PLATE	RIGAKU RAXIS IV++		2008-06-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	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	2.2	20	99.4	0.083	0.083	7	5.1	26208	26051			35

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)
	2.2	2.28	99.4		0.325	0.325	2.1	4.8	2618

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1U6A	2.2	20	25899	24611	1288	99.42	0.19752	0.19752	0.19477	0.24957	RANDOM	28.506

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]
-0.24		-0.17	1.2		-1.13

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.65
r_dihedral_angle_4_deg	24.796
r_dihedral_angle_3_deg	15.682
r_dihedral_angle_1_deg	6.977
r_sphericity_free	3.956
r_scangle_it	2.318
r_scbond_it	1.563
r_angle_refined_deg	1.375
r_sphericity_bonded	1.337
r_mcangle_it	1.175
r_rigid_bond_restr	1.144
r_mcbond_it	0.696
r_symmetry_vdw_refined	0.315
r_nbtor_refined	0.3
r_symmetry_metal_ion_refined	0.294
r_nbd_refined	0.196
r_xyhbond_nbd_refined	0.138
r_symmetry_hbond_refined	0.095
r_chiral_restr	0.093
r_metal_ion_refined	0.053
r_bond_refined_d	0.011
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3261
Nucleic Acid Atoms
Solvent Atoms	221
Heterogen Atoms	3

Software

Software
Software Name	Purpose
CrystalClear	data collection
PHASER	phasing
REFMAC	refinement
CrystalClear	data reduction
CrystalClear	data scaling