2A9A

Crystal structure of recombinant chicken sulfite oxidase with the bound product, sulfate, at the active site

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	295	PEG 4000, Magnesium sulfate, MES , pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.3	46.14

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 54.001	α = 90
b = 123.17	β = 94.7
c = 55.482	γ = 90

Symmetry
Space Group	P 1 21 1

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		2004-06-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X26C	1.100	NSLS	X26C

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	30	99.2	0.105				48006

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	2.07		92.8	0.553

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ID is 2A99	2.003	30	47924	2419	98.79	0.162	0.162	0.159	0.216	RANDOM	21.989

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]
0.32		0.32	0.12		-0.39

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.078
r_dihedral_angle_4_deg	18.695
r_dihedral_angle_3_deg	13.353
r_dihedral_angle_1_deg	4.525
r_scangle_it	2.886
r_scbond_it	1.994
r_angle_refined_deg	1.724
r_mcangle_it	1.312
r_angle_other_deg	1.16
r_mcbond_it	1.15
r_symmetry_hbond_refined	0.305
r_symmetry_vdw_other	0.267
r_symmetry_vdw_refined	0.239
r_xyhbond_nbd_refined	0.223
r_mcbond_other	0.204
r_nbd_refined	0.197
r_nbd_other	0.197
r_nbtor_refined	0.178
r_chiral_restr	0.108
r_xyhbond_nbd_other	0.105
r_metal_ion_refined	0.105
r_nbtor_other	0.089
r_bond_refined_d	0.016
r_gen_planes_refined	0.012
r_bond_other_d	0.002
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5637
Nucleic Acid Atoms
Solvent Atoms	658
Heterogen Atoms	70

Software

Software
Software Name	Purpose
HKL-2000	data collection
HKL-2000	data reduction
MOLREP	phasing
REFMAC	refinement
HKL-2000	data scaling