2AMO | pdb_00002amo

Loose Dimer of a Bacillus subtilis Nitric Oxide Synthase

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1M7Z	PDB Entry 1M7Z

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	298	Na Cacoldylate, Potassium Acetate, Peg4K, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.7	50

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 81.314	α = 90
b = 93.211	β = 90
c = 118.546	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	193	CCD	ADSC QUANTUM 4		2001-10-22	M	SINGLE WAVELENGTH
2	1	x-ray	193	CCD	ADSC QUANTUM 4		2004-06-24	M	SINGLE WAVELENGTH
3	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE F2	0.92	CHESS	F2
2	SYNCHROTRON	NSLS BEAMLINE X26C	0.93	NSLS	X26C
3	SYNCHROTRON	NSLS BEAMLINE X12C	0.9	NSLS	X12C

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
1,2	2.6	30	98.4				23234	1	1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.6	2.65	93.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work (Depositor)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB Entry 1M7Z	2.6	29.62	1	23234	1174	95	0.275	0.2756	0.2741	0.28969	RANDOM	60.878

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]
-5.15			-2.25		7.4

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.376
r_dihedral_angle_4_deg	23.022
r_dihedral_angle_3_deg	14.611
r_scangle_it	5.643
r_scbond_it	3.795
r_mcangle_it	2.541
r_angle_refined_deg	1.812
r_mcbond_it	1.522
r_dihedral_angle_1_deg	1.256
r_symmetry_vdw_refined	0.259
r_nbd_refined	0.242
r_symmetry_hbond_refined	0.193
r_xyhbond_nbd_refined	0.142
r_chiral_restr	0.116
r_gen_planes_refined	0.013
r_bond_refined_d	0.01
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
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	5737
Nucleic Acid Atoms
Solvent Atoms	280
Heterogen Atoms	86

Software

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