1XUO

X-ray structure of LFA-1 I-domain bound to a 1,4-diazepane-2,5-dione inhibitor at 1.8A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	293	PEG 6000, HEPES, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.4	49.3

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 46.259	α = 90
b = 59.995	β = 90
c = 142.616	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	293	IMAGE PLATE	MARRESEARCH		2000-07-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM1A	0.80000	ESRF	BM1A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.8	8	99.7	0.067	29.4	7.8	35097	35097			19.8

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.8	1.86	99.3		0.4	4.3		3631

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	1CQP	1.8	8	35097	35097	1844	99.73	0.18505	0.18353	0.21409	RANDOM	21.754

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]
0.27			-0.75		0.48

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.889
r_dihedral_angle_4_deg	16.618
r_dihedral_angle_3_deg	13.227
r_dihedral_angle_1_deg	5.734
r_scangle_it	3.12
r_scbond_it	2.21
r_mcangle_it	1.391
r_angle_refined_deg	1.283
r_mcbond_it	1.246
r_angle_other_deg	0.773
r_symmetry_vdw_other	0.286
r_nbd_refined	0.205
r_mcbond_other	0.187
r_symmetry_vdw_refined	0.174
r_nbd_other	0.172
r_xyhbond_nbd_refined	0.144
r_symmetry_hbond_refined	0.144
r_nbtor_other	0.086
r_chiral_restr	0.083
r_bond_refined_d	0.011
r_gen_planes_refined	0.005
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2866
Nucleic Acid Atoms
Solvent Atoms	246
Heterogen Atoms	42

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing