6T9E

Crystal structure of a bispecific DutaFab in complex with human PDGF

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	293	DutaFab and PDGF-BB (Peprotech, catalogue number 100-13A) were mixed at a 1:1 molar ratio in relation to PDGF monomer. The complex was concentrated to 12 mg/ml and crystallization was performed by hanging drop vapour diffusion against 0.1 M Tris pH 7.5, 42 % 2-methyl-2,4-pentanediol (MPD) at 20 C. Plate-shaped crystals grew within a few weeks and were frozen in liquid nitrogen with 20% glycerol as cryo-protectant.

Crystal Properties
Matthews coefficient	Solvent content
2.18	43.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 89.301	α = 90
b = 75.474	β = 110.584
c = 116.505	γ = 90

Symmetry
Space Group	P 1 21 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	PIXEL	DECTRIS PILATUS3 6M		2015-05-03	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I03	0.9760	Diamond	I03

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	2.989	30	97.7	0.162	7.3	3		29016			43.9

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	2.989	3.2	92.8		0.773	1.8	3

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 (All)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	4QCI	2.989	29.735	29016	1451	97.832	0.256	0.2531	0.3044	62.916

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]
6.669		-6.372	-3.405		1.187

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.015
r_dihedral_angle_3_deg	19.121
r_dihedral_angle_4_deg	16.836
r_lrange_it	14.031
r_mcangle_it	8.908
r_scangle_it	8.836
r_dihedral_angle_1_deg	8.151
r_mcbond_it	5.489
r_scbond_it	5.338
r_angle_refined_deg	1.448
r_nbtor_refined	0.312
r_nbd_refined	0.261
r_symmetry_xyhbond_nbd_refined	0.2
r_symmetry_nbd_refined	0.189
r_xyhbond_nbd_refined	0.183
r_ncsr_local_group_3	0.112
r_chiral_restr	0.108
r_ncsr_local_group_2	0.069
r_ncsr_local_group_1	0.066
r_bond_refined_d	0.006
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7935
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms

Software

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