3F8X

Crystal structure of a putative delta-5-3-ketosteroid isomerase (eca2236) from pectobacterium atrosepticum scri1043 at 1.55 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5	277	20.0000% PEG-6000, 0.1M Citrate pH 5.0, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.26	45.64

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.78	α = 79.41
b = 51.6	β = 79.74
c = 66.31	γ = 61.89

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	2008-08-03	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	0.91837,0.97934,0.97922	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	1.55	28.964	94.6	0.038	9.84			80729		-3	18.68

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	1.55	1.61	90.4		0.427	1.4

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		THROUGHOUT	1.55	25.31	76705	4016	95.82	0.15971	0.15822	0.1881	RANDOM	15.913

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]
-0.29	-0.32	0.14	1.39	0.29	-0.96

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.176
r_dihedral_angle_4_deg	15.179
r_dihedral_angle_3_deg	10.603
r_scangle_it	5.418
r_dihedral_angle_1_deg	5.208
r_scbond_it	4.056
r_mcangle_it	2.44
r_mcbond_it	1.769
r_angle_refined_deg	1.492
r_angle_other_deg	0.923
r_mcbond_other	0.458
r_symmetry_vdw_other	0.256
r_symmetry_vdw_refined	0.234
r_nbd_refined	0.228
r_symmetry_hbond_refined	0.217
r_xyhbond_nbd_refined	0.202
r_nbd_other	0.191
r_nbtor_refined	0.183
r_chiral_restr	0.091
r_nbtor_other	0.091
r_bond_refined_d	0.018
r_gen_planes_refined	0.005
r_gen_planes_other	0.002
r_bond_other_d	0.001
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4044
Nucleic Acid Atoms
Solvent Atoms	789
Heterogen Atoms

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