1DD7

MURINE INDUCIBLE NITRIC OXIDE SYNTHASE OXYGENASE DOMAIN (DELTA 114) (N-[(1,3-BENZODIOXOL-5-YL)METHYL]-1-[2-(1H-IMIDAZOL-1-YL)PYRIMIDIN-4-YL]-4-(METHOXYCARBONYL)-PIPERAZINE-2-ACETAMIDE COMPLEX

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.7	298	Crystals of murine delta114 iNOS were prepared in the presence of imidazole following the procedures of Crane et al. (reference 1) as follows: The 6 uL crystallization drops contained 20 mg/ml murine delta114 iNOS, 20 mM HEPES pH 7.6, 5 % glycerol, 0.5 mM DTT, 6.8 % PEG-3350, 60 mM Na2SO3, and 50 mM imidazole/malate buffer pH 4.7 were placed over a 1 ml reservoir containing 13.6 % PEG-3350, 120 mM Na2SO3, and 100 mM imidazole/malate buffer pH 4.7. These crystals were soaked for 25 hours in 5 uM N-[(1,3-benzodioxol-5-yl)methyl]-1-[2-(1H-imidazol-1-yl)pyrimidin-4-yl]- 4-(methoxycarbonyl)-piperazine-2-acetamide, 14 % PEG-3350, 1 mM NaN3, 50 mM MES pH 6.5 and 50 mM Na2SO3. The crystals were then rinsed in 33 % ethylene glycol, 9.3% PEG-3350, 0.7 mM NaN3, 33 mM MES pH 6.5 and 33 mM Na2SO3, and flash frozen in liquid nitrogen. , VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.42	49.24

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 63.42	α = 90
b = 73.93	β = 90
c = 93.64	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	IMAGE PLATE	MARRESEARCH		1998-05-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-1		SSRL	BL9-1

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	2.25	19.8	98	0.082	8	3.3	70075	21034		1	39.5

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)
	2.25	2.31	89		0.643		3.2	1420

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION		2.25	8	2	20240	20240	826	98	0.197	0.284	Random

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]

RMS Deviations
Key	Refinement Restraint Deviation
x_angle_deg	1.984
x_bond_d	0.013

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2931
Nucleic Acid Atoms
Solvent Atoms	570
Heterogen Atoms	87

Software

Software
Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
MAR345	data collection
MOSFLM	data reduction
CCP4	data scaling
X-PLOR	phasing

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.