4G7G

Sterol 14-alpha demethylase (CYP51) from Trypanosoma brucei in complex with the VNI derivative (R)-N-(1-(3,4'-difluorobiphenyl-4-yl)-2-(1H-imidazol-1-yl)ethyl)-4-(5-phenyl-1,3,4-oxadiazol-2-yl)benzamide [VNI/VNF (VFV)]

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3G1Q	PDB ENTRY 3G1Q

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.3	294	potassium phosphate, sodium chloride, glycerol, PEG3350, N-tetradecyl-beta-D-maltoside, pH 7.3, VAPOR DIFFUSION, HANGING DROP, temperature 294K

Crystal Properties
Matthews coefficient	Solvent content
2.49	50.63

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 59.947	α = 74.64
b = 79.706	β = 81.2
c = 117.868	γ = 68.96

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 225 mm CCD	Be Lenses/Diamond Laue Mono	2012-04-03	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-F	0.97872	APS	21-ID-F

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	2.05	29.817	98	0.046	0.046	31	4.6	123297	120831	2.6	2.6	37.85

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	2.05	2.09	97		0.58	2.6	4.5	5970

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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 3G1Q	2.05	29.817	117107	114765	6065	98.03	0.16597	0.1627	0.22618	RANDOM	44.796

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]
0.91	-0.72	0.32	-0.6	0.04	0.09

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.073
r_sphericity_free	20.98
r_dihedral_angle_4_deg	20.936
r_sphericity_bonded	16.799
r_dihedral_angle_3_deg	15.321
r_dihedral_angle_1_deg	5.385
r_rigid_bond_restr	2.287
r_angle_refined_deg	1.976
r_chiral_restr	0.076
r_bond_refined_d	0.008

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.073
r_sphericity_free	20.98
r_dihedral_angle_4_deg	20.936
r_sphericity_bonded	16.799
r_dihedral_angle_3_deg	15.321
r_dihedral_angle_1_deg	5.385
r_rigid_bond_restr	2.287
r_angle_refined_deg	1.976
r_chiral_restr	0.076
r_bond_refined_d	0.008
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	14228
Nucleic Acid Atoms
Solvent Atoms	504
Heterogen Atoms	336

Software

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

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.