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- EMDB-18592: E.coli DNA gyrase in complex with 217 bp substrate DNA and LEI-800 -

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Entry
Database: EMDB / ID: EMD-18592
TitleE.coli DNA gyrase in complex with 217 bp substrate DNA and LEI-800
Map data
Sample
  • Complex: Ternary complex of E.coli DNA gyrase with 217 bp linear dsDNA fragment and LEI-800
    • Protein or peptide: DNA gyrase subunit A
    • Protein or peptide: DNA gyrase subunit B
    • DNA: Mu217 chain E
    • DNA: Mu217 chain F
  • Ligand: ~{N}-[[(2~{S},5~{R})-5-(4-pyridin-3-ylphenyl)pyrrolidin-2-yl]methyl]isoquinoline-5-sulfonamide
  • Ligand: MAGNESIUM ION
KeywordsTOPOISOMERASE / GYRASE / ALLOSTERIC INHIBITOR / ANTIBIOTIC / DNA BINDING PROTEIN
Function / homology
Function and homology information


DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) activity / DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) complex / DNA negative supercoiling activity / DNA topoisomerase (ATP-hydrolysing) / DNA topological change / ATP-dependent activity, acting on DNA / DNA-templated DNA replication / chromosome / response to xenobiotic stimulus / response to antibiotic ...DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) activity / DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) complex / DNA negative supercoiling activity / DNA topoisomerase (ATP-hydrolysing) / DNA topological change / ATP-dependent activity, acting on DNA / DNA-templated DNA replication / chromosome / response to xenobiotic stimulus / response to antibiotic / DNA-templated transcription / DNA binding / ATP binding / metal ion binding / cytosol / cytoplasm
Similarity search - Function
: / GyrB, hook / DNA gyrase subunit B insert domain / DNA gyrase B subunit insert domain / DNA gyrase, subunit A / DNA gyrase/topoisomerase IV, subunit A, C-terminal repeat / DNA gyrase/topoisomerase IV, subunit A, C-terminal / : / DNA gyrase C-terminal domain, beta-propeller / DNA gyrase subunit B, TOPRIM domain ...: / GyrB, hook / DNA gyrase subunit B insert domain / DNA gyrase B subunit insert domain / DNA gyrase, subunit A / DNA gyrase/topoisomerase IV, subunit A, C-terminal repeat / DNA gyrase/topoisomerase IV, subunit A, C-terminal / : / DNA gyrase C-terminal domain, beta-propeller / DNA gyrase subunit B, TOPRIM domain / DNA gyrase, subunit B / DNA topoisomerase, type IIA, subunit B / DNA gyrase B subunit, C-terminal / DNA gyrase B subunit, carboxyl terminus / DNA topoisomerase, type IIA, alpha-helical domain superfamily / DNA topoisomerase, type IIA, domain A / DNA topoisomerase, type IIA, domain A, alpha-beta / DNA gyrase/topoisomerase IV, subunit A / DNA Topoisomerase IV / DNA topoisomerase, type IIA, subunit B, domain 2 / DNA gyrase B / DNA topoisomerase, type IIA / DNA topoisomerase, type IIA, conserved site / DNA topoisomerase II signature. / TopoisomeraseII / DNA topoisomerase, type IIA, subunit B, C-terminal / Toprim domain / DNA topoisomerase, type IIA-like domain superfamily / Toprim domain profile. / TOPRIM domain / Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase / Histidine kinase-like ATPases / Histidine kinase/HSP90-like ATPase / Histidine kinase/HSP90-like ATPase superfamily / Ribosomal protein S5 domain 2-type fold, subgroup / Ribosomal protein S5 domain 2-type fold
Similarity search - Domain/homology
DNA gyrase subunit A / DNA gyrase subunit B
Similarity search - Component
Biological speciesEscherichia coli (E. coli) / Escherichia phage Mu (virus)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.9 Å
AuthorsGhilarov D / Martin NI / van der Stelt M
Funding support United Kingdom, European Union, Netherlands, 4 items
OrganizationGrant numberCountry
Wellcome Trust221868/Z/20/Z United Kingdom
Biotechnology and Biological Sciences Research Council (BBSRC)BB/P012523/1 United Kingdom
European Research Council (ERC)725523European Union
Netherlands Organisation for Scientific Research (NWO)16444 Netherlands
CitationJournal: Nat Chem / Year: 2024
Title: Discovery of isoquinoline sulfonamides as allosteric gyrase inhibitors with activity against fluoroquinolone-resistant bacteria.
Authors: Alexander T Bakker / Ioli Kotsogianni / Mariana Avalos / Jeroen M Punt / Bing Liu / Diana Piermarini / Berend Gagestein / Cornelis J Slingerland / Le Zhang / Joost J Willemse / Leela B ...Authors: Alexander T Bakker / Ioli Kotsogianni / Mariana Avalos / Jeroen M Punt / Bing Liu / Diana Piermarini / Berend Gagestein / Cornelis J Slingerland / Le Zhang / Joost J Willemse / Leela B Ghimire / Richard J H B N van den Berg / Antonius P A Janssen / Tom H M Ottenhoff / Constant A A van Boeckel / Gilles P van Wezel / Dmitry Ghilarov / Nathaniel I Martin / Mario van der Stelt /
Abstract: Bacteria have evolved resistance to nearly all known antibacterials, emphasizing the need to identify antibiotics that operate via novel mechanisms. Here we report a class of allosteric inhibitors of ...Bacteria have evolved resistance to nearly all known antibacterials, emphasizing the need to identify antibiotics that operate via novel mechanisms. Here we report a class of allosteric inhibitors of DNA gyrase with antibacterial activity against fluoroquinolone-resistant clinical isolates of Escherichia coli. Screening of a small-molecule library revealed an initial isoquinoline sulfonamide hit, which was optimized via medicinal chemistry efforts to afford the more potent antibacterial LEI-800. Target identification studies, including whole-genome sequencing of in vitro selected mutants with resistance to isoquinoline sulfonamides, unanimously pointed to the DNA gyrase complex, an essential bacterial topoisomerase and an established antibacterial target. Using single-particle cryogenic electron microscopy, we determined the structure of the gyrase-LEI-800-DNA complex. The compound occupies an allosteric, hydrophobic pocket in the GyrA subunit and has a mode of action that is distinct from the clinically used fluoroquinolones or any other gyrase inhibitor reported to date. LEI-800 provides a chemotype suitable for development to counter the increasingly widespread bacterial resistance to fluoroquinolones.
History
DepositionOct 4, 2023-
Header (metadata) releaseJun 19, 2024-
Map releaseJun 19, 2024-
UpdateSep 18, 2024-
Current statusSep 18, 2024Processing site: PDBe / Status: Released

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Structure visualization

Supplemental images

emd_18592.png

Downloads & links

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Map

FileDownload / File: emd_18592.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.02 Å/pix.
x 400 pix.
= 408. Å		1.02 Å/pix.
x 400 pix.
= 408. Å		1.02 Å/pix.
x 400 pix.
= 408. Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.02 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.352
Minimum - Maximum-1.3492717 - 2.741727
Average (Standard dev.)-0.00022186567 (±0.03909377)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions400400400
Spacing400400400
CellA=B=C: 408.0 Å
α=β=γ: 90.0 °

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Supplemental data

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Additional map: #1

Fileemd_18592_additional_1.map
Projections & Slices
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Histogram (log scale)

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Half map: #2

Fileemd_18592_half_map_1.map
Projections & Slices
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Histogram

Histogram (log scale)

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Half map: #1

Fileemd_18592_half_map_2.map
Projections & Slices
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Sample components

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Entire : Ternary complex of E.coli DNA gyrase with 217 bp linear dsDNA fra...

EntireName: Ternary complex of E.coli DNA gyrase with 217 bp linear dsDNA fragment and LEI-800
Components
  • Complex: Ternary complex of E.coli DNA gyrase with 217 bp linear dsDNA fragment and LEI-800
    • Protein or peptide: DNA gyrase subunit A
    • Protein or peptide: DNA gyrase subunit B
    • DNA: Mu217 chain E
    • DNA: Mu217 chain F
  • Ligand: ~{N}-[[(2~{S},5~{R})-5-(4-pyridin-3-ylphenyl)pyrrolidin-2-yl]methyl]isoquinoline-5-sulfonamide
  • Ligand: MAGNESIUM ION

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Supramolecule #1: Ternary complex of E.coli DNA gyrase with 217 bp linear dsDNA fra...

SupramoleculeName: Ternary complex of E.coli DNA gyrase with 217 bp linear dsDNA fragment and LEI-800
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4
Source (natural)Organism: Escherichia coli (E. coli) / Strain: MG1655

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Macromolecule #1: DNA gyrase subunit A

MacromoleculeName: DNA gyrase subunit A / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli) / Strain: MG1655
Molecular weightTheoretical: 58.824207 KDa
Recombinant expressionOrganism: Escherichia coli BL21(DE3) (bacteria)
SequenceString: SSDLAREITP VNIEEELKSS YLDYAMSVIV GRALPDVRDG LKPVHRRVLY AMNVLGNDWN KAYKKSARVV GDVIGKYHPH GDSAVYDTI VRMAQPFSLR YMLVDGQGNF GSIDGDSAAA MRYTEIRLAK IAHELMADLE KETVDFVDNY DGTEKIPDVM P TKIPNLLV ...String:
SSDLAREITP VNIEEELKSS YLDYAMSVIV GRALPDVRDG LKPVHRRVLY AMNVLGNDWN KAYKKSARVV GDVIGKYHPH GDSAVYDTI VRMAQPFSLR YMLVDGQGNF GSIDGDSAAA MRYTEIRLAK IAHELMADLE KETVDFVDNY DGTEKIPDVM P TKIPNLLV NGSSGIAVGM ATNIPPHNLT EVINGCLAYI DDEDISIEGL MEHIPGPDFP TAAIINGRRG IEEAYRTGRG KV YIRARAE VEVDAKTGRE TIIVHEIPYQ VNKARLIEKI AELVKEKRVE GISALRDESD KDGMRIVIEV KRDAVGEVVL NNL YSQTQL QVSFGINMVA LHHGQPKIMN LKDIIAAFVR HRREVVTRRT IFELRKARDR AHILEALAVA LANIDPIIEL IRHA PTPAE AKTALVANPW QLGNVAAMLE RAGDDAARPE WLEPEFGVRD GLYYLTEQQA QAILDLRLQK LTGLEHEKLL DEYKE LLDQ IAELLRILGS ADRLMEVIRE ELELVREQFG DKRRTEITAN

UniProtKB: DNA gyrase subunit A

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Macromolecule #2: DNA gyrase subunit B

MacromoleculeName: DNA gyrase subunit B / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO / EC number: DNA topoisomerase (ATP-hydrolysing)
Source (natural)Organism: Escherichia coli (E. coli) / Strain: MG1655
Molecular weightTheoretical: 89.641391 KDa
Recombinant expressionOrganism: Escherichia coli BL21(DE3) (bacteria)
SequenceString: GPSNSYDSSS IKVLKGLDAV RKRPGMYIGD TDDGTGLHHM VFEVVDNAID EALAGHCKEI IVTIHADNSV SVQDDGRGIP TGIHPEEGV SAAEVIMTVL HAGGKFDDNS YKVSGGLHGV GVSVVNALSQ KLELVIQREG KIHRQIYEHG VPQAPLAVTG E TEKTGTMV ...String:
GPSNSYDSSS IKVLKGLDAV RKRPGMYIGD TDDGTGLHHM VFEVVDNAID EALAGHCKEI IVTIHADNSV SVQDDGRGIP TGIHPEEGV SAAEVIMTVL HAGGKFDDNS YKVSGGLHGV GVSVVNALSQ KLELVIQREG KIHRQIYEHG VPQAPLAVTG E TEKTGTMV RFWPSLETFT NVTEFEYEIL AKRLRELSFL NSGVSIRLRD KRDGKEDHFH YEGGIKAFVE YLNKNKTPIH PN IFYFSTE KDGIGVEVAL QWNDGFQENI YCFTNNIPQR DGGTHLAGFR AAMTRTLNAY MDKEGYSKKA KVSATGDDAR EGL IAVVSV KVPDPKFSSQ TKDKLVSSEV KSAVEQQMNE LLAEYLLENP TDAKIVVGKI IDAARAREAA RRAREMTRRK GALD LAGLP GKLADCQERD PALSELYLVE GDSAGGSAKQ GRNRKNQAIL PLKGKILNVE KARFDKMLSS QEVATLITAL GCGIG RDEY NPDKLRYHSI IIMTDADVDG SHIRTLLLTF FYRQMPEIVE RGHVYIAQPP LYKVKKGKQE QYIKDDEAMD QYQISI ALD GATLHTNASA PALAGEALEK LVSEYNATQK MINRMERRYP KAMLKELIYQ PTLTEADLSD EQTVTRWVNA LVSELND KE QHGSQWKFDV HTNAEQNLFE PIVRVRTHGV DTDYPLDHEF ITGGEYRRIC TLGEKLRGLL EEDAFIERGE RRQPVASF E QALDWLVKES RRGLSIQRYK GLGEMNPEQL WETTMDPESR RMLRVTVKDA IAADQLFTTL MGDAVEPRRA FIEENALKA A

UniProtKB: DNA gyrase subunit B

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Macromolecule #3: Mu217 chain E

MacromoleculeName: Mu217 chain E / type: dna / ID: 3 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: Escherichia phage Mu (virus)
Molecular weightTheoretical: 7.943173 KDa
SequenceString:
(DA)(DT)(DC)(DA)(DG)(DG)(DC)(DA)(DT)(DA) (DA)(DA)(DA)(DT)(DC)(DA)(DC)(DC)(DC)(DG) (DC)(DA)(DC)(DA)(DG)(DA)

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Macromolecule #4: Mu217 chain F

MacromoleculeName: Mu217 chain F / type: dna / ID: 4 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: Escherichia phage Mu (virus)
Molecular weightTheoretical: 8.031157 KDa
SequenceString:
(DT)(DC)(DT)(DG)(DT)(DG)(DC)(DG)(DG)(DG) (DT)(DG)(DA)(DT)(DT)(DT)(DT)(DA)(DT)(DG) (DC)(DC)(DT)(DG)(DA)(DT)

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Macromolecule #5: ~{N}-[[(2~{S},5~{R})-5-(4-pyridin-3-ylphenyl)pyrrolidin-2-yl]meth...

MacromoleculeName: ~{N}-[[(2~{S},5~{R})-5-(4-pyridin-3-ylphenyl)pyrrolidin-2-yl]methyl]isoquinoline-5-sulfonamide
type: ligand / ID: 5 / Number of copies: 2 / Formula: LRL
Molecular weightTheoretical: 444.549 Da

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Macromolecule #6: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 6 / Number of copies: 2 / Formula: MG
Molecular weightTheoretical: 24.305 Da

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration12 mg/mL
BufferpH: 8
Details: 25 mM Na-HEPES pH 8 KOAc 30 mM MgOAc 2.5 mM TCEP 0.5 mM CHAPSO 8 mM
GridModel: Quantifoil R2/1 / Material: COPPER / Mesh: 300
VitrificationCryogen name: ETHANE / Chamber humidity: 95 % / Chamber temperature: 293 K / Instrument: FEI VITROBOT MARK IV
DetailsMonodisperse sample

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 39.58 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.8000000000000003 µm / Nominal defocus min: 0.8 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 1810321
Startup modelType of model: NONE
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 4.2) / Number images used: 139848
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 4.2)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 4.2)
FSC plot (resolution estimation)

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