4R4R

Crystal structure of chimeric beta-lactamase cTEM-19m at 1.2 angstrom resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	295	30% PEG 4000, 0.2M magnesium chloride, 0.1M TrisHCl, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.05	40.13

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 36.69	α = 90
b = 58.79	β = 90
c = 109.83	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	RAYONIX MX-300		2011-08-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CLSI BEAMLINE 08ID-1	0.97949	CLSI	08ID-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	1.2	31.13	98.3	0.036	16.3	3	73668	73668			7.2

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	1.2	1.23	91.6		0.236	4.3	2.6	5000

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	FOURIER SYNTHESIS	THROUGHOUT	PDB ENTRY 4QY5	1.2	31.13	69928	69928	3688	97.91	0.10664	0.10664	0.10504	0.13751	RANDOM	12.242

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]
-0.19			0.12		0.07

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.852
r_sphericity_free	31.286
r_dihedral_angle_4_deg	15.008
r_dihedral_angle_3_deg	11.912
r_sphericity_bonded	11.267
r_rigid_bond_restr	6.064
r_dihedral_angle_1_deg	5.755
r_long_range_B_refined	4.399
r_long_range_B_other	3.282
r_scangle_other	2.559
r_scbond_it	2.209
r_scbond_other	2.209
r_angle_refined_deg	2.004
r_mcangle_it	1.52
r_mcangle_other	1.52
r_mcbond_it	1.116
r_mcbond_other	1.114
r_angle_other_deg	0.962
r_chiral_restr	0.141
r_bond_refined_d	0.021
r_gen_planes_refined	0.011
r_bond_other_d	0.004
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2011
Nucleic Acid Atoms
Solvent Atoms	408
Heterogen Atoms	7

Software

Software
Software Name	Purpose
MxDC	data collection
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling
REFMAC	phasing