2INX

Crystal Structure of Ketosteroid Isomerase D40N from Pseudomonas putida (pKSI) with bound 2,6-difluorophenol

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2B32	PDB entry 2B32

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	298	Ammonium sulphate 1.4 M, 2-propanol 6.5% protein concentration 25 mg/ml, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.07	40.64

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 35.114	α = 90
b = 94.887	β = 90
c = 72.424	γ = 90

Symmetry
Space Group	C 2 2 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	110	CCD	ADSC QUANTUM 315		2004-11-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 14-BM-C	0.900	APS	14-BM-C

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.5	47.4	96.8	0.079	16.1	9	19911	19274		-3	24.7

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.5	1.55	96.7		0.374	4.4	8.9	1890

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	PDB entry 2B32	1.5	47.4	18650	1830	93.69	0.19	0.185	0.234	RANDOM	26.929

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]
2.88			-2.58		-0.3

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.808
r_dihedral_angle_4_deg	18.333
r_dihedral_angle_3_deg	13.768
r_sphericity_free	11.133
r_sphericity_bonded	6.452
r_dihedral_angle_1_deg	5.874
r_scangle_it	5.5
r_scbond_it	3.957
r_mcangle_it	3.285
r_rigid_bond_restr	2.575
r_mcbond_it	2.266
r_angle_refined_deg	1.906
r_nbtor_refined	0.317
r_symmetry_vdw_refined	0.244
r_nbd_refined	0.219
r_xyhbond_nbd_refined	0.19
r_symmetry_hbond_refined	0.174
r_chiral_restr	0.13
r_bond_refined_d	0.021
r_gen_planes_refined	0.01

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1020
Nucleic Acid Atoms
Solvent Atoms	72
Heterogen Atoms	9

Software

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