3BKY

Crystal Structure of Chimeric Antibody C2H7 Fab in complex with a CD20 Peptide

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.9	277	0.2M di-ammonium hydrogen phosphate, 20% PEG3350, pH 7.9, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.49	50.68

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 96.49	α = 90
b = 96.49	β = 90
c = 107.613	γ = 90

Symmetry
Space Group	P 41 21 2

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	ADSC QUANTUM 4		2007-03-03	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE BL-6A	1.0000	Photon Factory	BL-6A

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	2.6	20	97.6	0.1	0.1	8.5	11.4	16029	15644			61.2

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	2.6	2.69	98.7		0.488	0.488	4.5	10.9	1538

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 2OSL	2.61	20	15976	15609	781	97.7	0.237	0.234	0.301	RANDOM	25.13

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]
-0.93			-0.93		1.86

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.176
r_dihedral_angle_3_deg	19.236
r_dihedral_angle_4_deg	16.546
r_dihedral_angle_1_deg	6.495
r_angle_refined_deg	1.22
r_scangle_it	1.179
r_scbond_it	0.726
r_mcangle_it	0.595
r_mcbond_it	0.348
r_nbtor_refined	0.304
r_symmetry_hbond_refined	0.268
r_nbd_refined	0.223
r_xyhbond_nbd_refined	0.177
r_symmetry_vdw_refined	0.167
r_chiral_restr	0.086
r_bond_refined_d	0.012
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3456
Nucleic Acid Atoms
Solvent Atoms	117
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling