4IJA

Structure of S. aureus methicillin resistance factor MecR2

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.2	293	Crystals suitable for structure analysis were obtained at 5.4mg/ml protein concentration in 20 mM Tris-HCl, 200 mM NaCl, pH7.4 by using 0.2M NaCl, 20% PEG 1000, 0.1M KH2PO4/Na2HPO4, pH6.2 as reservoir solution. Crystals were cryo-protected with reservoir solution supplemented with 30% glycerol, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.12	42.07

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.47	α = 90
b = 73.22	β = 90
c = 157.38	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 315r		2010-11-25	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1	0.976	ESRF	ID23-1

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	49.22	99.6	0.087	19.8	8.8	45671	45488		2	32.4

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	2.1	2.21	98.7		0.716		6.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	SAD	THROUGHOUT	2.1	49.22	46195	45433	762		0.191	0.191	0.1904	0.2294	RANDOM	49.15

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]
-7.252			3.6788		3.5732

RMS Deviations
Key	Refinement Restraint Deviation
t_omega_torsion	3.4
t_other_torsion	3.07
t_angle_deg	1.04
t_bond_d	0.01
t_dihedral_angle_d
t_trig_c_planes
t_gen_planes
t_it
t_nbd
t_improper_torsion
t_pseud_angle
t_chiral_improper_torsion
t_sum_occupancies
t_utility_distance
t_utility_angle
t_utility_torsion
t_ideal_dist_contact

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5813
Nucleic Acid Atoms
Solvent Atoms	278
Heterogen Atoms	45

Software

Software
Software Name	Purpose
ADSC	data collection
SHELXS	phasing
BUSTER	refinement
XDS	data reduction
XSCALE	data scaling