Experiment: 2E3J

The crystal structure of epoxide hydrolase B (Rv1938) from mycobacterium tuberculosis at 2.1 angstrom

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1EK1	RESIDUES 245-541 (C-TREMINAL DOMAIN) of PDB ID 1EK1

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.5	295	20% 2-PROPANOL, 0.2M CaCl2, 0.1M sodium acetate buffer, protein concentration 5-10mg/ml, pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.19	43.89

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.258	α = 90
b = 66.258	β = 90
c = 157.109	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		2005-09-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.3.1	1.115869	ALS	8.3.1

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	2.1	39.28	97.4	0.07		6.5	21248	20701			35.8

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	2.1	2.18	80.4		0.492	2.1	3.3	1663

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-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHT	RESIDUES 245-541 (C-TREMINAL DOMAIN) of PDB ID 1EK1	2.1	39.28	21248	20701	1038	97.4	0.235	0.2334	0.276	0.2803	RANDOM	52.65

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]
12.28			12.28		-24.57

RMS Deviations
Key	Refinement Restraint Deviation
c_angle_deg	1.26
c_bond_d	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2708
Nucleic Acid Atoms
Solvent Atoms	128
Heterogen Atoms	36

Software

Software
Software Name	Purpose
Blu-Ice	data collection
PHASER	phasing
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling