1GS6

Crystal structure of M144A mutant of Alcaligenes xylosoxidans Nitrite Reductase

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8.5		30% PEG 4000, 0.1M MGCL2, 0.1M TRIS-HCL PH8.5, TEMP GRADIENT 4-32 DEGREES C, pH 8.50

Crystal Properties
Matthews coefficient	Solvent content
3.07	59.6

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 106.86	α = 90
b = 106.86	β = 90
c = 64.026	γ = 120

Symmetry
Space Group	P 63

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	294	CCD	ADSC CCD	RH COATED SI MIRROR	1999-10-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SRS BEAMLINE PX9.6		SRS	PX9.6

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	2.2	20	99.4	0.097	11.2	2.9		27656		2

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)
1	2.2	2.32	99.4		0.32	2.4	2.7

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	PDN ENTRY 1NDT	2.2	60	20082	1058	99.2	0.15	0.148	0.181	RANDOM

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]

RMS Deviations
Key	Refinement Restraint Deviation
r_scangle_it	5.417
r_scbond_it	3.764
r_mcangle_it	2.604
r_angle_other_deg	2.508
r_mcbond_it	1.557
r_dihedral_angle_3_deg	1.525
r_nbtor_other	0.22
r_nbd_other	0.213
r_symmetry_hbond_refined	0.206
r_nbd_refined	0.205
r_xyhbond_nbd_other	0.197
r_symmetry_vdw_other	0.185
r_chiral_restr	0.18
r_symmetry_vdw_refined	0.171
r_xyhbond_nbd_refined	0.142
r_metal_ion_refined	0.07
r_bond_refined_d	0.033
r_gen_planes_refined	0.016
r_gen_planes_other	0.006
r_bond_other_d	0.002
r_angle_refined_deg
r_dihedral_angle_1_deg
r_dihedral_angle_2_deg
r_dihedral_angle_4_deg
r_nbtor_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2572
Nucleic Acid Atoms
Solvent Atoms	153
Heterogen Atoms	3

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALEPACK	data scaling
AMoRE	phasing