3P84

Y351A mutant of pentaerythritol tetranitrate reductase containing a bound acetate molecule

X-RAY DIFFRACTION

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Crystallization

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

Crystal Properties
Matthews coefficient	Solvent content
2.28	45.94

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 57.427	α = 90
b = 70.329	β = 90
c = 88.876	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		2008-04-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4	0.9696	ESRF	ID14-4

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	1.1	30	92.4	0.043	21.9	4	135417	135417

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.1	1.14	97.7		15.3	3.76

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	MOLECULAR REPLACEMENT	THROUGHOUT	1H50	1.1	21.08	135251	6775	92.57	0.1247	0.1239	0.1402	RANDOM	7.8628

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]
-0.01					0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.561
r_dihedral_angle_4_deg	12.517
r_dihedral_angle_3_deg	12.343
r_dihedral_angle_1_deg	5.95
r_sphericity_free	3.773
r_scangle_it	2.411
r_angle_other_deg	2.229
r_sphericity_bonded	1.771
r_scbond_it	1.736
r_angle_refined_deg	1.325
r_mcangle_it	1.25
r_mcbond_it	1.079
r_rigid_bond_restr	0.958
r_mcbond_other	0.642
r_nbd_refined	0.417
r_symmetry_vdw_other	0.374
r_symmetry_vdw_refined	0.342
r_nbd_other	0.303
r_nbtor_refined	0.183
r_symmetry_hbond_refined	0.182
r_nbtor_other	0.115
r_xyhbond_nbd_refined	0.085
r_chiral_restr	0.078
r_bond_refined_d	0.009
r_gen_planes_refined	0.008
r_gen_planes_other	0.005
r_bond_other_d	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2758
Nucleic Acid Atoms
Solvent Atoms	628
Heterogen Atoms	35

Software

Software
Software Name	Purpose
d*TREK	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
ADSC	data collection
d*TREK	data reduction