8PCR

Structure of serine-beta-lactamase CTX-M-14 following the time-resolved active site binding of boric acid and subsequent glycerol-boric acid-ester formation, 750 ms


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 6GTH 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1BATCH MODE29350% CTX-M-14 solution (22 mg/ml) was mixed with 45% precipitant solution (40% PEG8000, 200mM lithium sulfate, 100mM sodium acetate, pH 4.5) and with 5% undiluted seed stock in batch crystallization setups
Crystal Properties
Matthews coefficientSolvent content
2.1141.57

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 41.84α = 90
b = 41.84β = 90
c = 233.28γ = 120
Symmetry
Space GroupP 32 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray295PIXELDECTRIS EIGER2 X 16M2020-09-24MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONPETRA III, DESY BEAMLINE P111.033PETRA III, DESYP11

Serial Crystallography

Sample delivery method
Diffraction IDDescriptionSample Delivery Method
1CFEL TapeDriveinjection

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)CC (Half)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
11.735.811000.99510.7211822749421.44
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.71.720.161

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTFREE R-VALUE1.735.811.3327346159099.780.15220.15020.183230.2
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
KeyRefinement Restraint Deviation
f_dihedral_angle_d13.9875
f_angle_d0.7679
f_chiral_restr0.0416
f_plane_restr0.0046
f_bond_d0.0042
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1949
Nucleic Acid Atoms
Solvent Atoms227
Heterogen Atoms17

Software

Software
Software NamePurpose
PHENIXrefinement
CrystFELdata reduction
CrystFELdata scaling
PHENIXphasing
Cootmodel building