4BHC

CRYSTAL STRUCTURE OF THE M. TUBERCULOSIS O6-METHYLGUANINE METHYLTRANSFERASE R37L VARIANT

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.5		pH 7.5

Crystal Properties
Matthews coefficient	Solvent content
2.5	52

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 59.116	α = 90
b = 82.854	β = 90
c = 37.908	γ = 90

Symmetry
Space Group	P 21 21 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 210			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1		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	2.8	40	96.2	0.08	10.2	3.5		4572			59.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	OTHER	NONE	2.8	33.926	1.36	4554	30	86.56	0.1757	0.1756	0.2227	63.4

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	14.993
f_angle_d	1.117
f_chiral_restr	0.07
f_bond_d	0.009
f_plane_restr	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1256
Nucleic Acid Atoms
Solvent Atoms	48
Heterogen Atoms

Software

Software
Software Name	Purpose
PHENIX	refinement
MOSFLM	data reduction
SCALA	data scaling
PHENIX	phasing