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- PDB-7q5s: Protein community member fatty acid synthase complex from C. ther... -
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Open data
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Basic information
Entry | Database: PDB / ID: 7q5s | ||||||
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Title | Protein community member fatty acid synthase complex from C. thermophilum | ||||||
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![]() | TRANSFERASE / Fatty Acid Synthase / complex / chaetomium / thermophilum / fatty / acid / synthesis | ||||||
Function / homology | ![]() fatty acid synthase complex / holo-[acyl-carrier-protein] synthase activity / long-chain fatty acid biosynthetic process / fatty acid synthase activity / enoyl-[acyl-carrier-protein] reductase (NADH) activity / fatty acid biosynthetic process / magnesium ion binding Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.47 Å | ||||||
![]() | Chojnowski, G. / Skalidis, I. / Kyrilis, F.L. / Tueting, C. / Hamdi, F. / Kastritis, P.L. | ||||||
Funding support | 1items
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![]() | ![]() Title: Cryo-EM and artificial intelligence visualize endogenous protein community members. Authors: Ioannis Skalidis / Fotis L Kyrilis / Christian Tüting / Farzad Hamdi / Grzegorz Chojnowski / Panagiotis L Kastritis / ![]() Abstract: Cellular function is underlined by megadalton assemblies organizing in proximity, forming communities. Metabolons are protein communities involving metabolic pathways such as protein, fatty acid, and ...Cellular function is underlined by megadalton assemblies organizing in proximity, forming communities. Metabolons are protein communities involving metabolic pathways such as protein, fatty acid, and thioesters of coenzyme-A synthesis. Metabolons are highly heterogeneous due to their function, making their analysis particularly challenging. Here, we simultaneously characterize metabolon-embedded architectures of a 60S pre-ribosome, fatty acid synthase, and pyruvate/oxoglutarate dehydrogenase complex E2 cores de novo. Cryo-electron microscopy (cryo-EM) 3D reconstructions are resolved at 3.84-4.52 Å resolution by collecting <3,000 micrographs of a single cellular fraction. After combining cryo-EM with artificial intelligence-based atomic modeling and de novo sequence identification methods, at this resolution range, polypeptide hydrogen bonding patterns are discernible. Residing molecular components resemble their purified counterparts from other eukaryotes but also exhibit substantial conformational variation with potential functional implications. Our results propose an integrated tool, boosted by machine learning, that opens doors for structural systems biology spearheaded by cryo-EM characterization of native cell extracts. | ||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 3.6 MB | Display | ![]() |
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PDB format | ![]() | Display | ![]() | |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 13846MC ![]() 7q5qC ![]() 7q5rC M: map data used to model this data C: citing same article ( |
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Similar structure data | |
EM raw data | ![]() Data size: 1.1 TB Data #1: Unaligned fractions saved by Falcon 3 EC camera [micrographs - multiframe]) |
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Links
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Assembly
Deposited unit | ![]()
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Noncrystallographic symmetry (NCS) | NCS domain:
NCS domain segments:
NCS ensembles :
NCS oper:
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Components
#1: Protein | Mass: 235450.672 Da / Num. of mol.: 6 / Source method: isolated from a natural source Source: (natural) ![]() References: UniProt: G0S867 #2: Protein | Mass: 205066.922 Da / Num. of mol.: 6 / Source method: isolated from a natural source Source: (natural) ![]() References: UniProt: G0S866 |
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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 |
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Sample preparation
Component | Name: Fatty Acid Synthase Complex from Chaetomium thermophilum Type: COMPLEX / Entity ID: all / Source: NATURAL |
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Molecular weight | Units: MEGADALTONS / Experimental value: NO |
Source (natural) | Organism: ![]() |
Buffer solution | pH: 7.4 |
Buffer component | Conc.: 200 mM / Name: Ammonium acetate / Formula: NH4CH2COOH |
Specimen | Conc.: 0.3 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 277 K Details: For plunging, blot force 2 and blotting time of 6 sec were applied. |
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Electron microscopy imaging
Microscopy | Model: TFS GLACIOS |
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Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 92000 X / Calibrated magnification: 95675 X / Nominal defocus max: 2000 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm / C2 aperture diameter: 100 µm / Alignment procedure: COMA FREE |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: OTHER / Temperature (max): 103.15 K / Temperature (min): 77.15 K / Residual tilt: 14.7 mradians |
Image recording | Electron dose: 30 e/Å2 / Detector mode: COUNTING / Film or detector model: FEI FALCON III (4k x 4k) / Num. of real images: 2808 |
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Processing
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EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 4.47 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 5231 / Algorithm: SIMULTANEOUS ITERATIVE (SIRT) / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: FLEXIBLE FIT / Space: REAL Details: Initial models were predicted using AlphaFold v2.0.1, fitted into reconstructions using COOT and finally refined in real space using COOT and phenix.real_space_refine | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 244.94 Å2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refine LS restraints |
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Refine LS restraints NCS |
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