4Y9S

structure of an H300N mutant of potato epoxide hydrolase, StEH1

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	3.5	293	1 UL DROPS OF PROTEIN SOLUTION (7.2 MG/ML, I.E. 0.2 MM, IN 30 MM TRIS-HCL, PH 7.4, 5 MM VALPROMIDE) WERE MIXED WITH 1 UL DROPS OF RESERVOIR SOLUTION (CONTAINING 90 MM NA-HEPES, PH 7.5, 25% PEG 10, 000). Once crystals were obtained they were soaked in mother liquor at pH 3.5 prior to freezing.

Crystal Properties
Matthews coefficient	Solvent content
2.2	44.13

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 56.021	α = 90
b = 96.036	β = 90
c = 121.551	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	100	CCD	ADSC QUANTUM 4	toroidal mirror	2008-04-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-2	0.93300	ESRF	ID14-2

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	51.36	100	0.08	14.7	4.6		45161

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2	2.09	100		4.4	4.6

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2CJP	2	51.36	42817	2276	99.99	0.14957	0.14696	0.19873	RANDOM	19.956

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]
-0.26			-0.53		0.78

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.881
r_dihedral_angle_4_deg	20.954
r_dihedral_angle_3_deg	14.811
r_long_range_B_refined	6.295
r_dihedral_angle_1_deg	6.276
r_long_range_B_other	6.158
r_scangle_other	4.4
r_scbond_it	2.817
r_scbond_other	2.817
r_mcangle_it	2.612
r_mcangle_other	2.612
r_angle_refined_deg	1.817
r_mcbond_it	1.776
r_mcbond_other	1.772
r_angle_other_deg	0.912
r_chiral_restr	0.117
r_bond_refined_d	0.018
r_gen_planes_refined	0.011
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5111
Nucleic Acid Atoms
Solvent Atoms	482
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
REFMAC	phasing