3IDV

Crystal structure of the a0a fragment of ERp72

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	293	0.01M zinc chloride, 20% PEG 6000, 0.1M Tris-HCl, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.34	47.34

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 54.883	α = 90
b = 54.883	β = 90
c = 166.497	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 210	mirrors	2007-11-03	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE A1	0.9995	CHESS	A1

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	1.95	50	99.9	0.12	14.8	8.5	18326	18308	1	1

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	1.95	2.02	99.9		0.374	6.9	7	1284

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	2b5e	1.95	45.83	1	18326	18308	990	99.87	0.20841	0.2064	0.24577	RANDOM	22.472

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]
-0.01			-0.01		0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	29.631
r_dihedral_angle_4_deg	18.067
r_dihedral_angle_3_deg	17.882
r_dihedral_angle_1_deg	5.275
r_scangle_it	4.076
r_scbond_it	2.452
r_mcangle_it	1.573
r_angle_refined_deg	1.44
r_mcbond_it	0.935
r_nbtor_refined	0.309
r_symmetry_hbond_refined	0.269
r_xyhbond_nbd_refined	0.244
r_nbd_refined	0.224
r_symmetry_vdw_refined	0.167
r_metal_ion_refined	0.135
r_chiral_restr	0.126
r_bond_refined_d	0.014
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1854
Nucleic Acid Atoms
Solvent Atoms	71
Heterogen Atoms	3

Software

Software
Software Name	Purpose
ADSC	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling