2VKU

4,4'-Dihydroxybenzophenone Mimics Sterol Substrate in the Binding Site of Sterol 14alpha-Demethylase (CYP51) in the X-ray Structure of the Complex

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2CIB	PDB ENTRY 2CIB

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.5	296	1.2 M LI SULFATE, 0.1 M HEPES, 7.5, 2% ISOPROPANOL, T=23 C

Crystal Properties
Matthews coefficient	Solvent content
2.6	53

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 77.734	α = 90
b = 82.095	β = 90
c = 85.859	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	110	CCD	ADSC CCD	MIRRORS	2007-11-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.3.1		ALS	8.3.1

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	1.95	50	100	0.08	23.4	5.2		40591			13.7

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	1.95	2.02	100		0.41	4.1	5.3

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 2CIB	1.95	47.17	40519	4009	99.5	0.177	0.177	0.212	RANDOM	24.9

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]
4.95			-0.81		-4.14

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	20.5
c_scangle_it	2.92
c_mcangle_it	2.04
c_scbond_it	1.96
c_angle_deg	1.3
c_mcbond_it	1.3
c_improper_angle_d	0.95
c_bond_d	0.007
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3522
Nucleic Acid Atoms
Solvent Atoms	518
Heterogen Atoms	137

Software

Software
Software Name	Purpose
CNS	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
MOLREP	phasing