Experiment: 2PG6

Crystal Structure of Human Microsomal P450 2A6 L240C/N297Q

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1Z10	coumarin complex of CYP2A6, PDB entry 1Z10

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	291	PEG3350, Tris, ammonium sulfate, Anapoe-35, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.65	53.6

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 70.7	α = 90
b = 158.245	β = 92.09
c = 103.764	γ = 90

Symmetry
Space Group	P 1 21 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	ADSC QUANTUM 315	Double-crystal monochromator, 1m long Rh coated bent cylindrical mirror for horizontal and vertical focussing	2005-12-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL1-5	0.98	SSRL	BL1-5

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	2.53	50	94	0.096	0.096	8.7	3.1	70956	70956			34.9

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.53	2.59	88.3		0.238	0.238	3.4	2.2	6642

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	coumarin complex of CYP2A6, PDB entry 1Z10	2.53	40	67294	70898	3604	90.1	0.239	0.239	0.209	0.2032	0.261	0.1987	random	34.145

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]
-8.544		-2.663	-3.689		12.233

RMS Deviations
Key	Refinement Restraint Deviation
c_scangle_it	2.394
c_mcangle_it	1.671
c_scbond_it	1.632
c_mcbond_it	1.035

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	15015
Nucleic Acid Atoms
Solvent Atoms	315
Heterogen Atoms	172

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
CNS	refinement
PDB_EXTRACT	data extraction
Blu-Ice	data collection
CNS	phasing