Experiment: 2XPY

Structure of Native Leukotriene A4 Hydrolase from Saccharomyces cerevisiae

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1HS6	PDB ENTRY 1HS6

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP			TO OBTAIN DIFFRACTION QUALITY CRYSTALS, HANGING DROPS OF 2 UL OF PROTEIN (6 MG/ML) AND 1 UL OF MOTHER LIQUOR (0.1 M MMT BUFFER, PH 8, 12-14% PEG 6000) WERE ALLOWED TO EQUILIBRATE AGAINST THE MOTHER LIQUOR FOR 18-24 HOURS BEFORE THE DROPS WERE STREAK SEEDED FROM EARLIER CRYSTALS.

Crystal Properties
Matthews coefficient	Solvent content
1.95	37

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 159.556	α = 90
b = 159.556	β = 90
c = 76.832	γ = 120

Symmetry
Space Group	P 32 2 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	MARRESEARCH	MULTILAYER MIRROR, CURVED TO FOCUS IN THE VERTICAL		M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MAX II BEAMLINE I911-2		MAX II	I911-2

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	2.7	26	95.3	0.09	7.4	4.1		30000			43.62

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	2.7	2.75	68.8		0.47	1.6	3.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	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	MOLECULAR REPLACEMENT	PDB ENTRY 1HS6	2.73	26.005	0.01	28409	1432	93.87	0.1779	0.1747	0.1718	0.2402	0.2302

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]
4.949			4.949		-9.898

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	16.675
f_angle_d	1.148
f_chiral_restr	0.08
f_bond_d	0.008
f_plane_restr	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5122
Nucleic Acid Atoms
Solvent Atoms	114
Heterogen Atoms	27

Software

Software
Software Name	Purpose
PHENIX	refinement
MOSFLM	data reduction
SCALEPACK	data scaling
PHASER	phasing