4ENH

Crystal Structure of Human Cytochrome P450 CYP46A1 with Fluvoxamine Bound

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2Q9F	PDB ENTRY 2Q9F

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.8	290	Crystals were grown after mixing 1 ul of an ~40 mg/ml P450 solution with 1 ul of precipitant solution (15% PEG 8000, 50 M FLX, 50 mM potassium phosphate, 20% glycerol), pH 5.8, VAPOR DIFFUSION, SITTING DROP, temperature 290K

Crystal Properties
Matthews coefficient	Solvent content
2.5	50.73

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 121.13	α = 90
b = 121.13	β = 90
c = 141.9	γ = 90

Symmetry
Space Group	I 41 2 2

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	ADSC QUANTUM 315		2011-04-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL7-1	1.09717	SSRL	BL7-1

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	2.5	92.129	100	0.101	6.2	7		18625

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	2.5	2.64	100		0.6	1.3

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 2Q9F	2.5	60.57	18580	950	99.66	0.2133	0.2104	0.2721	RANDOM	44.5623

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]
0.6			0.6		-1.19

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.34
r_dihedral_angle_3_deg	18.541
r_dihedral_angle_4_deg	15.368
r_dihedral_angle_1_deg	5.245
r_scangle_it	2.823
r_scbond_it	1.699
r_mcangle_it	1.228
r_angle_refined_deg	1.185
r_mcbond_it	0.654
r_chiral_restr	0.095
r_bond_refined_d	0.01
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3430
Nucleic Acid Atoms
Solvent Atoms	132
Heterogen Atoms	65

Software

Software
Software Name	Purpose
SCALA	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
Blu-Ice	data collection
XDS	data reduction
PHASER	phasing