3Q99

Structure of neuronal nitric oxide synthase in the ferric state in complex with N~5~-[(3-(ethylsulfanyl)propanimidoyl]-L-ornithine

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.8	277	20-24% PEG3350, 0.1M MES, 140mM ammonium acetate, 5mM GSH, 35uM SDS, pH 5.8, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.44	49.68

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52.165	α = 90
b = 111.422	β = 90
c = 164.214	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 315	mirror	2009-12-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL7-1	1.000	SSRL	BL7-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.15	50	91.1	0.084	0.084	12.1	2.5		48312		-3	34.1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.15	2.19	91.3		0.405	0.405	1.7	2.5

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	FOURIER SYNTHESIS	THROUGHOUT	1OM4	2.15	49.26	45856	2405	91.14	0.19263	0.19018	0.2393	RANDOM	36.837

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]
1.94			1.08		-3.02

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.441
r_dihedral_angle_4_deg	18.984
r_dihedral_angle_3_deg	15.553
r_dihedral_angle_1_deg	6.103
r_scangle_it	2.816
r_scbond_it	1.87
r_angle_refined_deg	1.398
r_mcangle_it	1.108
r_mcbond_it	0.607
r_chiral_restr	0.097
r_bond_refined_d	0.013
r_gen_planes_refined	0.007
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
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_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6658
Nucleic Acid Atoms
Solvent Atoms	265
Heterogen Atoms	161

Software

Software
Software Name	Purpose
Blu-Ice	data collection
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
REFMAC	phasing