5HDI

Structural characterization of CYP144A1, a Mycobacterium tuberculosis cytochrome P450

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		277	Crystallography was performed using the sitting drop method using 20 mg/ml CYP144A1. Drops were prepared by the addition of 0.2 microl of CYP144A1-FLV and -TRV proteins to 0.2 microl of mother liquor and by incubating at 4 oC. Following initial crystallogenesis using commercial screens, crystallization conditions were further refined to 0.8 or 1.0 M (NH4)2SO4 with 0.1 M HEPES, pH 7.55, and 25% PEG 3350. Single crystals were flash cooled after addition of 10% PEG 200 as cryoprotectant

Crystal Properties
Matthews coefficient	Solvent content
2.38	48.38

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 58.35	α = 90
b = 117.79	β = 90
c = 122.09	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	100	PIXEL	PSI PILATUS 6M		2014-08-09	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I03	1.00	Diamond	I03

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	1.54	88.58	98.7	0.097	10.4	4.4		116903			15.8

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	1.54	1.58	97.1		0.807	2.3	4.4

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	2XKR	1.54	84.77	116903	6118	98.45	0.14028	0.13761	0.19238	RANDOM	22.554

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]
2.01			-2.08		0.07

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.219
r_sphericity_free	26.91
r_dihedral_angle_4_deg	18.53
r_sphericity_bonded	17.578
r_dihedral_angle_3_deg	12.953
r_rigid_bond_restr	7.629
r_dihedral_angle_1_deg	5.672
r_angle_refined_deg	1.872
r_angle_other_deg	0.987
r_chiral_restr	0.126
r_bond_refined_d	0.019
r_gen_planes_refined	0.011
r_gen_planes_other	0.006
r_bond_other_d	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_it
r_mcbond_other
r_mcangle_it
r_mcangle_other
r_scbond_it
r_scbond_other
r_scangle_it
r_scangle_other
r_long_range_B_refined
r_long_range_B_other

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6044
Nucleic Acid Atoms
Solvent Atoms	546
Heterogen Atoms	86

Software

Software
Software Name	Purpose
REFMAC	refinement
xia2	data reduction
xia2	data scaling
PHASER	phasing