3BB9

Crystal structure of a putative ketosteroid isomerase (sfri_1973) from shewanella frigidimarina ncimb 400 at 1.80 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.2	277	NANODROP, 0.2M K/Na Tartrate, 20.0% PEG 3350, No Buffer pH 7.2, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
1.689	27.155

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.558	α = 90
b = 113.82	β = 90
c = 137.132	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 315		2007-10-04	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.2.2	0.9537, 0.9797	ALS	8.2.2

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	1.8	29.361	98.1	0.1	0.1	6.4	3.4		61505			19.34

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	1.8	1.85	92.3		0.833	0.833	0.9	3.1	4217

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	MAD	THROUGHOUT	1.8	29.361	61450	3117	97.88	0.178	0.175	0.228	RANDOM	17.971

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]
0.26			-0.68		0.42

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	46.523
r_dihedral_angle_3_deg	12.961
r_dihedral_angle_4_deg	9.96
r_scangle_it	6.915
r_scbond_it	5.269
r_dihedral_angle_1_deg	4.925
r_mcangle_it	2.963
r_mcbond_it	2.123
r_angle_refined_deg	1.55
r_mcbond_other	0.925
r_angle_other_deg	0.896
r_symmetry_vdw_refined	0.259
r_symmetry_vdw_other	0.218
r_nbd_refined	0.209
r_xyhbond_nbd_refined	0.207
r_symmetry_hbond_refined	0.201
r_nbd_other	0.193
r_nbtor_refined	0.173
r_xyhbond_nbd_other	0.146
r_nbtor_other	0.093
r_chiral_restr	0.077
r_bond_refined_d	0.017
r_gen_planes_refined	0.006
r_gen_planes_other	0.002
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5635
Nucleic Acid Atoms
Solvent Atoms	611
Heterogen Atoms	40

Software

Software
Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
SHELX	phasing
MolProbity	model building
SCALA	data scaling
PDB_EXTRACT	data extraction
ADSC	data collection
MOSFLM	data reduction
SHELXD	phasing
SHARP	phasing