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- PDB-7bds: Structure of CTX-M-15 crystallised in the presence of tazobactam -

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Basic information

Entry
Database: PDB / ID: 7bds
TitleStructure of CTX-M-15 crystallised in the presence of tazobactam
ComponentsBeta-lactamase
KeywordsANTIMICROBIAL PROTEIN / beta-lactamase / inhibitor / antibiotic resistance / cross-link
Function / homology
Function and homology information


beta-lactam antibiotic catabolic process / beta-lactamase activity / beta-lactamase / response to antibiotic
Similarity search - Function
Beta-lactamase, class-A active site / Beta-lactamase class-A active site. / Beta-lactamase class A, catalytic domain / Beta-lactamase enzyme family / Beta-lactamase, class-A / Beta-lactamase / DD-peptidase/beta-lactamase superfamily / Beta-lactamase/transpeptidase-like / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
Biological speciesKlebsiella pneumoniae IS53 (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 0.91 Å
AuthorsTooke, C.L. / Hinchliffe, P. / Spencer, J.
Funding support United Kingdom, 1items
OrganizationGrant numberCountry
Biotechnology and Biological Sciences Research Council (BBSRC)BB/J014400/1 United Kingdom
CitationJournal: Mbio / Year: 2022
Title: Penicillanic Acid Sulfones Inactivate the Extended-Spectrum beta-Lactamase CTX-M-15 through Formation of a Serine-Lysine Cross-Link: an Alternative Mechanism of beta-Lactamase Inhibition.
Authors: Hinchliffe, P. / Tooke, C.L. / Bethel, C.R. / Wang, B. / Arthur, C. / Heesom, K.J. / Shapiro, S. / Schlatzer, D.M. / Papp-Wallace, K.M. / Bonomo, R.A. / Spencer, J.
History
DepositionDec 22, 2020Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jan 12, 2022Provider: repository / Type: Initial release
Revision 1.1Jun 1, 2022Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year
Revision 1.2Jul 6, 2022Group: Database references / Category: citation / Item: _citation.journal_volume
Revision 1.3Jan 31, 2024Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model
Revision 1.4Oct 23, 2024Group: Structure summary / Category: pdbx_entry_details / Item: _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Beta-lactamase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)28,6015
Polymers28,2771
Non-polymers3244
Water6,828379
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area400 Å2
ΔGint-23 kcal/mol
Surface area11270 Å2
MethodPISA
Unit cell
Length a, b, c (Å)44.748, 45.587, 117.443
Angle α, β, γ (deg.)90.000, 90.000, 90.000
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein Beta-lactamase


Mass: 28276.986 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Klebsiella pneumoniae IS53 (bacteria) / Production host: Escherichia coli (E. coli) / Strain (production host): SoluBL21 / References: UniProt: W1EPV7, beta-lactamase
#2: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: SO4
#3: Chemical ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Cl
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 379 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestN
Has protein modificationN

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.12 Å3/Da / Density % sol: 41.93 %
Crystal growTemperature: 294.15 K / Method: vapor diffusion, sitting drop / Details: 2.0 M ammonium sulphate, 0.1 M Tris 8.0

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: SOLEIL / Beamline: PROXIMA 1 / Wavelength: 0.97856 Å
DetectorType: DECTRIS EIGER X 16M / Detector: PIXEL / Date: Nov 27, 2020
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97856 Å / Relative weight: 1
ReflectionResolution: 0.91→58.72 Å / Num. obs: 159975 / % possible obs: 92.9 % / Redundancy: 11.9 % / CC1/2: 0.997 / Rpim(I) all: 0.029 / Net I/σ(I): 13.7
Reflection shellResolution: 0.91→0.93 Å / Mean I/σ(I) obs: 1.9 / Num. unique obs: 3864 / CC1/2: 0.655 / Rpim(I) all: 0.389

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Processing

Software
NameVersionClassification
PHENIX1.18.2_3874refinement
PDB_EXTRACT3.27data extraction
DIALSdata reduction
Aimlessdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 6QW8

6qw8


Resolution: 0.91→58.72 Å / SU ML: 0.04 / Cross valid method: THROUGHOUT / σ(F): 1.35 / Phase error: 10.46 / Stereochemistry target values: ML
RfactorNum. reflection% reflection
Rfree0.1292 7944 4.97 %
Rwork0.1144 151916 -
obs0.1151 159860 92.71 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Displacement parametersBiso max: 65.87 Å2 / Biso mean: 10.9695 Å2 / Biso min: 3.8 Å2
Refinement stepCycle: final / Resolution: 0.91→58.72 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1943 0 16 382 2341
Biso mean--31.9 24.87 -
Num. residues----259
LS refinement shell

Refine-ID: X-RAY DIFFRACTION / Rfactor Rfree error: 0 / Total num. of bins used: 30

Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkNum. reflection all% reflection obs (%)
0.91-0.920.22891160.21962329244543
0.92-0.930.21991510.19692877302853
0.93-0.940.20321840.17383438362264
0.94-0.950.16842370.1614042427975
0.95-0.970.16212360.14384620485686
0.97-0.980.15012610.12784951521292
0.98-0.990.12662330.11965162539594
0.99-1.010.1282640.11315233549797
1.01-1.020.11922670.11045254552197
1.02-1.040.1192810.10475272555397
1.04-1.060.11322800.10225290557098
1.06-1.080.10112600.09665317557798
1.08-1.10.10662470.09515302554998
1.1-1.120.10252820.09115314559698
1.12-1.150.09512780.08965327560598
1.15-1.170.11042420.09075414565699
1.17-1.20.10133080.09325349565799
1.2-1.230.10783210.09195330565199
1.23-1.270.11492920.09275394568699
1.27-1.310.0932860.09155390567699
1.31-1.360.10062970.09675417571499
1.36-1.410.11882830.09954365719100
1.41-1.480.11713030.099254415744100
1.48-1.560.1133040.099854475751100
1.56-1.650.12382550.106755375792100
1.65-1.780.12992700.110955235793100
1.78-1.960.12072920.112255205812100
1.96-2.240.1292910.111655685859100
2.24-2.830.14513230.122855855908100
2.83-58.720.16183000.145758376137100

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