Experiment: 3DWJ

Heme-proximal W188H mutant of inducible nitric oxide synthase

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1NOD	PDB entry 1NOD

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5.3	277	0.7-1.2M (NH4)2SO4, 0.1M MES, pH 4.9-5.7, pH 5.3, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
3.73	67.05

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 214.597	α = 90
b = 214.597	β = 90
c = 111.933	γ = 120

Symmetry
Space Group	P 61 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	95	CCD	NOIR-1		2007-10-31	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 4.2.2		ALS	4.2.2

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	2.75	43.8	95	0.108	6.7	4.53		37844		5	55.47

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)
	2.75	2.85	94.4		0.423	2.1	4.49

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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 1NOD	2.75	43.77	37844	37844	3507	92.3	0.229	0.226	0.2262	0.294	0.2946	73.11

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]
-10.75			-10.75		21.5

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	20.2
f_angle_d	1.486
f_chiral_restr	0.1
f_bond_d	0.009
f_plane_restr	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6677
Nucleic Acid Atoms
Solvent Atoms	323
Heterogen Atoms	127

Software

Software
Software Name	Purpose
PHENIX	refinement
d*TREK	data reduction
d*TREK	data scaling
PHENIX	phasing