- EMDB-17365: Staphylococcus aureus 70S ribosome with elongation factor G locke... -
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ID or keywords:
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Basic information
Entry
Database: EMDB / ID: EMD-17365
Title
Staphylococcus aureus 70S ribosome with elongation factor G locked with fusidic acid with a tRNA in pe/E chimeric state
Map data
Local filtered map
Sample
Complex: Staphylococcus aureus 70S ribosome with elongation factor G and fusidic acid
Protein or peptide: x 48 types
RNA: x 5 types
Ligand: x 6 types
Keywords
RIBOSOME / fusidic acid / EF-G / antibiotic
Function / homology
Function and homology information
ribosome disassembly / translation elongation factor activity / large ribosomal subunit / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / transferase activity / 5S rRNA binding / large ribosomal subunit rRNA binding ...ribosome disassembly / translation elongation factor activity / large ribosomal subunit / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / transferase activity / 5S rRNA binding / large ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / cytosolic large ribosomal subunit / cytoplasmic translation / tRNA binding / rRNA binding / negative regulation of translation / ribosome / structural constituent of ribosome / ribonucleoprotein complex / translation / GTPase activity / mRNA binding / GTP binding / RNA binding / zinc ion binding / cytosol / cytoplasm Similarity search - Function
Ribosomal protein L31 type B / : / Translation elongation factor EFG/EF2 / Elongation factor G, domain III / EFG, domain V / Elongation Factor G, domain II / Elongation Factor G, domain III / Translation elongation factor EFG/EF2, domain IV / Elongation factor G, domain IV / Elongation factor G, domain IV ...Ribosomal protein L31 type B / : / Translation elongation factor EFG/EF2 / Elongation factor G, domain III / EFG, domain V / Elongation Factor G, domain II / Elongation Factor G, domain III / Translation elongation factor EFG/EF2, domain IV / Elongation factor G, domain IV / Elongation factor G, domain IV / Ribosomal protein L25, long-form / Ribosomal protein L25, beta domain / Ribosomal protein L25, C-terminal / Ribosomal protein TL5, C-terminal domain / Elongation factor G C-terminus / Elongation factor EFG, domain V-like / Elongation factor G C-terminus / EF-G domain III/V-like / Tr-type G domain, conserved site / Translational (tr)-type guanine nucleotide-binding (G) domain signature. / : / Ribosomal protein S14, type Z / Translation elongation factor EFTu-like, domain 2 / Elongation factor Tu domain 2 / Translational (tr)-type GTP-binding domain / Elongation factor Tu GTP binding domain / Translational (tr)-type guanine nucleotide-binding (G) domain profile. / Ribosomal protein L31 signature. / Ribosomal protein L31 / Ribosomal protein L31 superfamily / Ribosomal protein L31 / : / Ribosomal protein L16 signature 1. / : / Ribosomal protein L6, conserved site / Ribosomal protein L6 signature 1. / Ribosomal protein L16, conserved site / Ribosomal protein L16 signature 2. / Ribosomal protein L17 signature. / Ribosomal L25p family / Ribosomal protein L25 / Ribosomal protein L36 signature. / Ribosomal protein L28/L24 superfamily / Ribosomal protein L25/Gln-tRNA synthetase, N-terminal / Ribosomal protein L32p, bacterial type / Ribosomal protein L25/Gln-tRNA synthetase, anti-codon-binding domain superfamily / : / : / Ribosomal protein L35, conserved site / Ribosomal protein L35 signature. / Ribosomal protein L28 / Ribosomal protein L33, conserved site / Ribosomal protein L33 signature. / Ribosomal protein L35, non-mitochondrial / Ribosomal protein S14/S29 / Ribosomal protein L5, bacterial-type / Ribosomal protein L18, bacterial-type / Ribosomal protein L6, bacterial-type / Ribosomal protein L19, conserved site / Ribosomal protein L19 signature. / Ribosomal protein S3, bacterial-type / Ribosomal protein S6, conserved site / Ribosomal protein S6 signature. / Ribosomal protein S19, bacterial-type / Ribosomal protein L36 / Ribosomal protein L36 superfamily / Ribosomal protein L36 / Ribosomal protein S7, bacterial/organellar-type / Ribosomal protein L20 signature. / Ribosomal protein S11, bacterial-type / Ribosomal protein S13, bacterial-type / Ribosomal protein S20 / Ribosomal protein S20 superfamily / Ribosomal protein S20 / Ribosomal protein S9, bacterial/plastid / Ribosomal protein L27, conserved site / Ribosomal protein L27 signature. / Ribosomal protein S4, bacterial-type / 30S ribosomal protein S17 / Ribosomal protein S5, bacterial-type / Ribosomal protein L14P, bacterial-type / Ribosomal protein L34, conserved site / Ribosomal protein L34 signature. / Ribosomal protein S6, plastid/chloroplast / Ribosomal protein L22, bacterial/chloroplast-type / Ribosomal protein L2, bacterial/organellar-type / Ribosomal protein S2, bacteria/mitochondria/plastid / Ribosomal protein L35 / Ribosomal protein L35 superfamily / Ribosomal protein L35 / Ribosomal L28 family / Ribosomal protein L33 / Ribosomal protein L33 / Ribosomal protein L28/L24 / Ribosomal protein L18 / Ribosomal L18 of archaea, bacteria, mitoch. and chloroplast / Ribosomal protein L33 superfamily / Ribosomal protein L30, bacterial-type / Ribosomal protein S18, conserved site / Ribosomal protein S18 signature. Similarity search - Domain/homology
Small ribosomal subunit protein uS10 / Large ribosomal subunit protein uL15 / Large ribosomal subunit protein uL30 / Small ribosomal subunit protein uS12 / Small ribosomal subunit protein uS7 / Large ribosomal subunit protein uL2 / Large ribosomal subunit protein bL34 / Large ribosomal subunit protein uL3 / Large ribosomal subunit protein uL4 / Large ribosomal subunit protein uL23 ...Small ribosomal subunit protein uS10 / Large ribosomal subunit protein uL15 / Large ribosomal subunit protein uL30 / Small ribosomal subunit protein uS12 / Small ribosomal subunit protein uS7 / Large ribosomal subunit protein uL2 / Large ribosomal subunit protein bL34 / Large ribosomal subunit protein uL3 / Large ribosomal subunit protein uL4 / Large ribosomal subunit protein uL23 / Small ribosomal subunit protein uS19 / Large ribosomal subunit protein uL22 / Small ribosomal subunit protein uS3 / Large ribosomal subunit protein uL16 / Large ribosomal subunit protein uL29 / Small ribosomal subunit protein uS17 / Large ribosomal subunit protein uL14 / Large ribosomal subunit protein uL24 / Large ribosomal subunit protein uL5 / Small ribosomal subunit protein uS14B / Small ribosomal subunit protein uS8 / Large ribosomal subunit protein uL6 / Large ribosomal subunit protein uL18 / Small ribosomal subunit protein uS5 / Large ribosomal subunit protein bL36 / Small ribosomal subunit protein uS13 / Small ribosomal subunit protein uS11 / Large ribosomal subunit protein bL17 / Large ribosomal subunit protein uL13 / Small ribosomal subunit protein uS9 / Large ribosomal subunit protein bL31B / Small ribosomal subunit protein uS4 / Large ribosomal subunit protein bL35 / Large ribosomal subunit protein bL20 / Large ribosomal subunit protein bL21 / Large ribosomal subunit protein bL27 / Small ribosomal subunit protein bS20 / Large ribosomal subunit protein bL33A / Small ribosomal subunit protein uS2 / Large ribosomal subunit protein bL19 / Small ribosomal subunit protein bS16 / Large ribosomal subunit protein bL28 / Large ribosomal subunit protein bL32 / Elongation factor G / Large ribosomal subunit protein bL25 / Small ribosomal subunit protein bS18 / Small ribosomal subunit protein bS6 / Small ribosomal subunit protein uS15 Similarity search - Component
Sven och Lilly Lawskis fond for naturvetenskaplig forskning
Sweden
Uppsala Antibiotic Center
Sweden
Swedish Research Council
2016-06264
Sweden
Swedish Research Council
2022-04511
Sweden
Citation
Journal: Sci Rep / Year: 2024 Title: Structures of the Staphylococcus aureus ribosome inhibited by fusidic acid and fusidic acid cyclopentane. Authors: Adrián González-López / Daniel S D Larsson / Ravi Kiran Koripella / Brett N Cain / Martin Garcia Chavez / Paul J Hergenrother / Suparna Sanyal / Maria Selmer / Abstract: The antibiotic fusidic acid (FA) is used to treat Staphylococcus aureus infections. It inhibits protein synthesis by binding to elongation factor G (EF-G) and preventing its release from the ribosome ...The antibiotic fusidic acid (FA) is used to treat Staphylococcus aureus infections. It inhibits protein synthesis by binding to elongation factor G (EF-G) and preventing its release from the ribosome after translocation. While FA, due to permeability issues, is only effective against gram-positive bacteria, the available structures of FA-inhibited complexes are from gram-negative model organisms. To fill this knowledge gap, we solved cryo-EM structures of the S. aureus ribosome in complex with mRNA, tRNA, EF-G and FA to 2.5 Å resolution and the corresponding complex structures with the recently developed FA derivative FA-cyclopentane (FA-CP) to 2.0 Å resolution. With both FA variants, the majority of the ribosomal particles are observed in chimeric state and only a minor population in post-translocational state. As expected, FA binds in a pocket between domains I, II and III of EF-G and the sarcin-ricin loop of 23S rRNA. FA-CP binds in an identical position, but its cyclopentane moiety provides additional contacts to EF-G and 23S rRNA, suggesting that its improved resistance profile towards mutations in EF-G is due to higher-affinity binding. These high-resolution structures reveal new details about the S. aureus ribosome, including confirmation of many rRNA modifications, and provide an optimal starting point for future structure-based drug discovery on an important clinical drug target.
Name: ZINC ION / type: ligand / ID: 59 / Number of copies: 3 / Formula: ZN
Molecular weight
Theoretical: 65.409 Da
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Experimental details
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Structure determination
Method
cryo EM
Processing
single particle reconstruction
Aggregation state
particle
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Sample preparation
Buffer
pH: 7.5 Component:
Concentration
Formula
Name
20.0 mM
C8H18N2O4S
HEPES-KOH
95.0 mM
KCl
Potassium chloride
5.0 mM
NH4Cl
Ammonium chloride
5.0 mM
Mg(OAc)2
Magnesium acetate
0.5 mM
CaCl2
Calcium chloride
8.0 mM
(CH2)4(NH2)2
Putrescine
1.0 mM
C7H19N3
Spermidine
0.4 mM
C33H50O6Na
Fusidic acid
Grid
Model: Quantifoil R2/2 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: CONTINUOUS / Support film - Film thickness: 2 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 30 sec. / Pretreatment - Atmosphere: AIR / Pretreatment - Pressure: 0.039 kPa
Vitrification
Cryogen name: ETHANE / Chamber humidity: 90 % / Chamber temperature: 277.15 K / Instrument: FEI VITROBOT MARK IV
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Electron microscopy
Microscope
TFS KRIOS
Specialist optics
Energy filter - Name: GIF Bioquantum / Energy filter - Slit width: 20 eV
Image recording
Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Number grids imaged: 1 / Number real images: 5486 / Average exposure time: 1.3 sec. / Average electron dose: 30.83 e/Å2
Electron beam
Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
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