Experiment: 6U33

Structure-based discovery of a novel small-molecule inhibitor of methicillin-resistant S. aureus

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1LKF	PDB entry 1LKF

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	298	12 mg/mL protein in 10 mM sodium acetate, pH 5.4 against reservoir solution of 20% PEG2000 MME, 10 mM nickel chloride, 0.1 M Tris-HCl, pH 8.5

Crystal Properties
Matthews coefficient	Solvent content
2.56	51.94

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 123.611	α = 90
b = 48.732	β = 120.85
c = 66.731	γ = 90

Symmetry
Space Group	C 1 2 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	MAR CCD 165 mm		2012-03-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X4C	0.979	NSLS	X4C

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	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	1.75	57.3	92.6	0.055	0.984	15.8	3		32045

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.75	1.78	58.7		0.297	0.938	3.7	2.3

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 1LKF	1.75	57.29	30471	1574	92.39	0.1769	0.1747	0.1753	0.2173	0.2179	RANDOM	28.224

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]
0.35		-0.02	1.58		-1.11

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	41.668
r_dihedral_angle_3_deg	14.481
r_dihedral_angle_4_deg	13.093
r_dihedral_angle_1_deg	6.675
r_angle_refined_deg	1.875
r_chiral_restr	0.142
r_bond_refined_d	0.019
r_gen_planes_refined	0.01

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2380
Nucleic Acid Atoms
Solvent Atoms	217
Heterogen Atoms	1

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing