3HX8

Crystal structure of putative ketosteroid isomerase (NP_103587.1) from Mesorhizobium loti at 1.45 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6	277	30.0000% PEG-6000, 0.1M MES pH 6.0, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.25	45.25

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 48.336	α = 69.02
b = 55.111	β = 76.89
c = 56.862	γ = 64.83

Symmetry
Space Group	P 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	MARMOSAIC 325 mm CCD	Flat collimating mirror, toroid focusing mirror	2009-03-19	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	0.91162,0.97929,0.97915	SSRL	BL9-2

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	1.45	28.028	94.5	0.041	9.05			83844		-3	18.22

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)
	1.45	1.5	87.8		0.452	1.3

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	1.45	28.028	83844	4214	95.42	0.149	0.147	0.186	RANDOM	23.576

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]
-0.68	0.49	0.04	0.6	-0.67	0.13

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	28.561
r_dihedral_angle_4_deg	24.316
r_dihedral_angle_3_deg	13.321
r_sphericity_free	8.187
r_dihedral_angle_1_deg	6.124
r_scangle_it	5.076
r_sphericity_bonded	3.684
r_scbond_it	3.504
r_mcangle_it	2.487
r_rigid_bond_restr	1.599
r_mcbond_it	1.581
r_angle_refined_deg	1.524
r_angle_other_deg	0.888
r_mcbond_other	0.692
r_chiral_restr	0.094
r_bond_refined_d	0.016
r_gen_planes_refined	0.008
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4034
Nucleic Acid Atoms
Solvent Atoms	637
Heterogen Atoms	116

Software

Software
Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
SHELX	phasing
MolProbity	model building
XSCALE	data scaling
PDB_EXTRACT	data extraction
XDS	data reduction
SHELXD	phasing
autoSHARP	phasing