2FC1

Heme NO Complex in NOS

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	298	PEg8K, K acetate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.8	56.09

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 80.009	α = 90
b = 93.517	β = 90
c = 62.768	γ = 90

Symmetry
Space Group	P 21 21 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 4		2004-01-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE F1	0.91	CHESS	F1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2	20	26643	2944	100	0.26	0.25252	0.23171	0.25963	RANDOM	47.31

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]
-2.63			-1.56		4.19

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.269
r_dihedral_angle_4_deg	19.906
r_dihedral_angle_3_deg	12.626
r_scangle_it	6.164
r_scbond_it	4.267
r_mcangle_it	2.501
r_mcbond_it	1.763
r_angle_refined_deg	1.526
r_dihedral_angle_1_deg	1.406
r_nbd_refined	0.408

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.269
r_dihedral_angle_4_deg	19.906
r_dihedral_angle_3_deg	12.626
r_scangle_it	6.164
r_scbond_it	4.267
r_mcangle_it	2.501
r_mcbond_it	1.763
r_angle_refined_deg	1.526
r_dihedral_angle_1_deg	1.406
r_nbd_refined	0.408
r_xyhbond_nbd_refined	0.393
r_symmetry_hbond_refined	0.355
r_nbtor_refined	0.32
r_metal_ion_refined	0.317
r_symmetry_vdw_refined	0.304
r_chiral_restr	0.107
r_gen_planes_refined	0.017
r_bond_refined_d	0.012

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2933
Nucleic Acid Atoms
Solvent Atoms	460
Heterogen Atoms	74

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
CNS	phasing

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 R01GM157729.