3OLT

X-ray crystal structure of arachidonic acid bound to the cyclooxygenase channel of R513H murine COX-2

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	296	23-34% polyacrylic acid 5100, 100mM HEPES pH 7.5, 20mM MgCl2, VAPOR DIFFUSION, SITTING DROP, temperature 296K

Crystal Properties
Matthews coefficient	Solvent content
2.66	53.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 121.148	α = 90
b = 132.048	β = 90
c = 180.758	γ = 90

Symmetry
Space Group	I 2 2 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		2009-04-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE A1	0.9780	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	2.45	20	99.8	0.099	11.8	4.9	53369	53369	-3	-6	43.5

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	2.45	2.58	100		0.536	2.7	4.9	7699

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	PDB entry 1CVU	2.45	19.86	-6	53369	50659	2707	100	0.16565	0.16281	0.21929	RANDOM	30.636

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]
0.81			0.26		-1.07

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.549
r_dihedral_angle_3_deg	15.352
r_dihedral_angle_4_deg	14.24
r_dihedral_angle_1_deg	5.511
r_scangle_it	3.127
r_scbond_it	1.907
r_angle_refined_deg	1.663
r_mcangle_it	0.957
r_mcbond_it	0.483
r_chiral_restr	0.095

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.549
r_dihedral_angle_3_deg	15.352
r_dihedral_angle_4_deg	14.24
r_dihedral_angle_1_deg	5.511
r_scangle_it	3.127
r_scbond_it	1.907
r_angle_refined_deg	1.663
r_mcangle_it	0.957
r_mcbond_it	0.483
r_chiral_restr	0.095
r_bond_refined_d	0.013
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8865
Nucleic Acid Atoms
Solvent Atoms	513
Heterogen Atoms	368

Software

Software
Software Name	Purpose
Adxv	data processing
PHASER	phasing
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.