4GSQ

Structural basis for the inhibition of Mycobacterium tuberculosis L,D-transpeptidase by meropenem, a drug effective against extensively drug-resistant strains

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	296	50mM calcium chloride, 100mM bis-tris, 30%(v/v) polyethylene glycol monomethyl ether 550, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 296K

Crystal Properties
Matthews coefficient	Solvent content
2.59	52.56

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 135.594	α = 90
b = 58.639	β = 94.4
c = 40.925	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	ADSC QUANTUM 270		2011-10-08	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE AR-NE3A	1.0000	Photon Factory	AR-NE3A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.8	20	97.9			30118	29426	9.1	9.1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.8	1.83	70.4

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	1.8	20	28536	27937	1489	99.04	0.19663	0.19663	0.19469	0.23346	RANDOM	24.367

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]
-1.52		0.2	-0.38		1.93

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	29.684
r_dihedral_angle_3_deg	13.234
r_dihedral_angle_4_deg	12.278
r_dihedral_angle_1_deg	5.568
r_angle_refined_deg	1.292
r_chiral_restr	0.088
r_bond_refined_d	0.009
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1889
Nucleic Acid Atoms
Solvent Atoms	206
Heterogen Atoms	7

Software

Software
Software Name	Purpose
HKL-2000	data collection
AutoSol	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.