3EKF

Crystal structure of the A264Q heme domain of cytochrome P450 BM3

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2IJ4

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6	293	Magnesium sulphate and PEG, pH 6, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.5	50.72

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 61.067	α = 90
b = 119.709	β = 90
c = 146.672	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	CCD	ADSC QUANTUM 210		2006-01-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1	1.0	ESRF	ID14-1

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	2.1	12	98.6	0.088	12.1		59671	59671

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2IJ4	2.1	12	59671	59671	3132	98.6	0.21786	0.21786	0.21525	0.26682	RANDOM	33.466

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]
0.01			-0.04		0.03

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.693
r_dihedral_angle_4_deg	15.726
r_dihedral_angle_3_deg	15.465
r_dihedral_angle_1_deg	5.995
r_scangle_it	2.959
r_scbond_it	1.873
r_angle_refined_deg	1.358
r_mcangle_it	1.309
r_mcbond_it	0.771
r_nbtor_refined	0.303
r_nbd_refined	0.214
r_symmetry_hbond_refined	0.185
r_xyhbond_nbd_refined	0.172
r_symmetry_vdw_refined	0.145
r_chiral_restr	0.089
r_bond_refined_d	0.011
r_gen_planes_refined	0.005
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7233
Nucleic Acid Atoms
Solvent Atoms	576
Heterogen Atoms	86

Software

Software
Software Name	Purpose
ADSC	data collection
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling