Experiment: 3V4P

crystal structure of a4b7 headpiece complexed with Fab ACT-1

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	277	0.1 M Tris, 0.1 M NaCl, 8-10% PEG 20,000, VAPOR DIFFUSION, HANGING DROP, temperature 277K, pH 8.5

Crystal Properties
Matthews coefficient	Solvent content
3.58	65.68

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 137.78	α = 90
b = 122.74	β = 115.38
c = 158.14	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	CCD	MARMOSAIC 300 mm CCD		2008-12-06	M	SINGLE WAVELENGTH
2	1	x-ray	100					M	SINGLE WAVELENGTH
3	1	x-ray	100					M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-D	1.00695	APS	23-ID-D
2	SYNCHROTRON	APS BEAMLINE 23-ID-D	0.97945	APS	23-ID-D
3	SYNCHROTRON	APS BEAMLINE 23-ID-D	0.97945,0.97960,0.94957	APS	23-ID-D

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
1,2,3	3.15	50	99.3	0.089	0.089	10.3	3.78		82079	2	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)
1,2,3	3.15	3.299	100		0.915	0.915	1.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	SAD	3.15	46.13	1.99	82057	1067	99.46	0.2204	0.2199	0.2236	0.2514	0.2527

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]
-32.8093		3.9672	-16.651		-11.7665

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	11.651
f_angle_d	0.689
f_chiral_restr	0.047
f_bond_d	0.003
f_plane_restr	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	21380
Nucleic Acid Atoms
Solvent Atoms	21
Heterogen Atoms	298

Software

Software
Software Name	Purpose
HKL-2000	data collection
SHARP	phasing
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling