+Open data
-Basic information
Entry | Database: PDB / ID: 8tzj | ||||||
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Title | Cryo-EM structure of Vibrio cholerae FtsE/FtsX complex | ||||||
Components |
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Keywords | TRANSPORT PROTEIN / membrane protein / enzyme | ||||||
Function / homology | Function and homology information | ||||||
Biological species | Vibrio cholerae (bacteria) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.51 Å | ||||||
Authors | Hao, A. / Lee, S.-Y. | ||||||
Funding support | United States, 1items
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Citation | Journal: Structure / Year: 2024 Title: Structural insights into the FtsEX-EnvC complex regulation on septal peptidoglycan hydrolysis in Vibrio cholerae. Authors: Aili Hao / Yang Suo / Seok-Yong Lee / Abstract: During bacterial cell division, hydrolysis of septal peptidoglycan (sPG) is crucial for cell separation. This sPG hydrolysis is performed by the enzyme amidases whose activity is regulated by the ...During bacterial cell division, hydrolysis of septal peptidoglycan (sPG) is crucial for cell separation. This sPG hydrolysis is performed by the enzyme amidases whose activity is regulated by the integral membrane protein complex FtsEX-EnvC. FtsEX is an ATP-binding cassette transporter, and EnvC is a long coiled-coil protein that interacts with and activates the amidases. The molecular mechanism by which the FtsEX-EnvC complex activates amidases remains largely unclear. We present the cryo-electron microscopy structure of the FtsEX-EnvC complex from the pathogenic bacteria V. cholerae (FtsEX-EnvC). FtsEX-EnvC in the presence of ADP adopts a distinct conformation where EnvC is "horizontally extended" rather than "vertically extended". Subsequent structural studies suggest that EnvC can swing between these conformations in space in a nucleotide-dependent manner. Our structural analysis and functional studies suggest that FtsEX-EnvC employs spatial control of EnvC for amidase activation, providing mechanistic insights into the FtsEX-EnvC regulation on septal peptidoglycan hydrolysis. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 8tzj.cif.gz | 288 KB | Display | PDBx/mmCIF format |
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PDB format | pdb8tzj.ent.gz | 232.5 KB | Display | PDB format |
PDBx/mmJSON format | 8tzj.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 8tzj_validation.pdf.gz | 1.3 MB | Display | wwPDB validaton report |
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Full document | 8tzj_full_validation.pdf.gz | 1.3 MB | Display | |
Data in XML | 8tzj_validation.xml.gz | 33.6 KB | Display | |
Data in CIF | 8tzj_validation.cif.gz | 46.5 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/tz/8tzj ftp://data.pdbj.org/pub/pdb/validation_reports/tz/8tzj | HTTPS FTP |
-Related structure data
Related structure data | 41760MC 8tzkC 8tzlC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
#1: Protein | Mass: 25319.082 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Vibrio cholerae (bacteria) Gene: ftsE, BC353_10980, D6U24_16490, ERS013186_02644, ERS013200_01646, ERS013202_02748, EYB64_19995, F0H40_16745, F0M16_17140, FLM02_03075, FLM12_11020 Production host: Escherichia coli (E. coli) / References: UniProt: A0A085R4L6 #2: Protein | Mass: 36516.773 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Vibrio cholerae (bacteria) / Gene: ftsX / Production host: Escherichia coli (E. coli) / References: UniProt: A0A0H6I1B7 #3: Chemical | #4: Chemical | Has ligand of interest | Y | |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: FtsEX / Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT | |||||||||||||||
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Molecular weight | Value: 0.2 MDa / Experimental value: NO | |||||||||||||||
Source (natural) | Organism: Vibrio cholerae (bacteria) | |||||||||||||||
Source (recombinant) | Organism: Escherichia coli (E. coli) / Strain: C41 | |||||||||||||||
Buffer solution | pH: 8 | |||||||||||||||
Buffer component |
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Specimen | Conc.: 8 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | |||||||||||||||
Vitrification | Instrument: LEICA EM GP / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 277 K |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 81000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm / C2 aperture diameter: 100 µm / Alignment procedure: COMA FREE |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Average exposure time: 2.4 sec. / Electron dose: 60 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 |
EM imaging optics | Energyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV |
Image scans | Width: 5760 / Height: 4092 |
-Processing
EM software |
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CTF correction | Type: PHASE FLIPPING ONLY | ||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 2434011 | ||||||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.51 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 261627 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: FLEXIBLE FIT / Space: REAL | ||||||||||||||||||||||||||||||||||||||||
Atomic model building | Source name: AlphaFold / Type: in silico model | ||||||||||||||||||||||||||||||||||||||||
Refine LS restraints |
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