3P74

H181N mutant of pentaerythritol tetranitrate reductase containing a C-terminal His8-tag

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	6.2	293	100mM sodium cacodylate, 100 mM sodium acetate, 16-18% isopropanol, pH 6.2, vapor diffusion, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.23	44.79

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 59.119	α = 90
b = 69.086	β = 90
c = 88.623	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 1		2008-12-04	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4	1.07	ESRF	ID14-4

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	1.2	54.486	98.3	0.049	0.049	19.8	5.4	111751	111751

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	1.26	91.4		0.244	0.244	2.5	3.4	14955

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.2	44.32	111664	5582	98.1	0.137	0.1359	0.1587	RANDOM	13.9864

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]
-0.04			0.03		0.02

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.067
r_dihedral_angle_4_deg	15.313
r_dihedral_angle_3_deg	12.117
r_dihedral_angle_1_deg	5.705
r_sphericity_free	5.212
r_sphericity_bonded	3.039
r_scangle_it	2.717
r_scbond_it	2.054
r_mcangle_it	1.492
r_angle_refined_deg	1.359
r_mcbond_it	1.106
r_rigid_bond_restr	1.031
r_angle_other_deg	0.926
r_mcbond_other	0.579
r_symmetry_hbond_refined	0.353
r_symmetry_vdw_other	0.316
r_nbd_other	0.21
r_nbd_refined	0.209
r_nbtor_refined	0.176
r_xyhbond_nbd_refined	0.113
r_nbtor_other	0.086
r_chiral_restr	0.081
r_symmetry_vdw_refined	0.073
r_bond_refined_d	0.009
r_gen_planes_refined	0.009
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2750
Nucleic Acid Atoms
Solvent Atoms	625
Heterogen Atoms	31

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
ADSC	data collection