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- EMDB-16134: Escherichia coli anaerobic fatty acid beta oxidation trifunctiona... -
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Open data
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Basic information
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Title | Escherichia coli anaerobic fatty acid beta oxidation trifunctional enzyme (anEcTFE) octameric complex | ||||||||||||
![]() | AnEcTFE octamer | ||||||||||||
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![]() | complex / heterooctamer / MEMBRANE PROTEIN | ||||||||||||
Function / homology | ![]() fatty acid beta-oxidation, unsaturated, even number / fatty acid beta-oxidation multienzyme complex / 3-hydroxybutyryl-CoA epimerase / 3-hydroxybutyryl-CoA epimerase activity / acetyl-CoA C-acyltransferase / acetyl-CoA C-acyltransferase activity / long-chain-3-hydroxyacyl-CoA dehydrogenase activity / enoyl-CoA hydratase / 3-hydroxyacyl-CoA dehydrogenase / 3-hydroxyacyl-CoA dehydrogenase activity ...fatty acid beta-oxidation, unsaturated, even number / fatty acid beta-oxidation multienzyme complex / 3-hydroxybutyryl-CoA epimerase / 3-hydroxybutyryl-CoA epimerase activity / acetyl-CoA C-acyltransferase / acetyl-CoA C-acyltransferase activity / long-chain-3-hydroxyacyl-CoA dehydrogenase activity / enoyl-CoA hydratase / 3-hydroxyacyl-CoA dehydrogenase / 3-hydroxyacyl-CoA dehydrogenase activity / acetyl-CoA C-acetyltransferase activity / enoyl-CoA hydratase activity / fatty acid beta-oxidation / NAD+ binding / cytosol / cytoplasm Similarity search - Function | ||||||||||||
Biological species | ![]() ![]() ![]() ![]() | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 10.3 Å | ||||||||||||
![]() | Sah-Teli SK / Pinkas M / Novacek J / Venkatesan R | ||||||||||||
Funding support | ![]() ![]()
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![]() | ![]() Title: Structural basis for different membrane-binding properties of E. coli anaerobic and human mitochondrial β-oxidation trifunctional enzymes. Authors: Shiv K Sah-Teli / Matyas Pinkas / Mikko J Hynönen / Sarah J Butcher / Rik K Wierenga / Jiri Novacek / Rajaram Venkatesan / ![]() ![]() Abstract: Facultative anaerobic bacteria such as Escherichia coli have two αβ heterotetrameric trifunctional enzymes (TFE), catalyzing the last three steps of the β-oxidation cycle: soluble aerobic TFE ...Facultative anaerobic bacteria such as Escherichia coli have two αβ heterotetrameric trifunctional enzymes (TFE), catalyzing the last three steps of the β-oxidation cycle: soluble aerobic TFE (EcTFE) and membrane-associated anaerobic TFE (anEcTFE), closely related to the human mitochondrial TFE (HsTFE). The cryo-EM structure of anEcTFE and crystal structures of anEcTFE-α show that the overall assembly of anEcTFE and HsTFE is similar. However, their membrane-binding properties differ considerably. The shorter A5-H7 and H8 regions of anEcTFE-α result in weaker α-β as well as α-membrane interactions, respectively. The protruding H-H region of anEcTFE-β is therefore more critical for membrane-association. Mutational studies also show that this region is important for the stability of the anEcTFE-β dimer and anEcTFE heterotetramer. The fatty acyl tail binding tunnel of the anEcTFE-α hydratase domain, as in HsTFE-α, is wider than in EcTFE-α, accommodating longer fatty acyl tails, in good agreement with their respective substrate specificities. | ||||||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 14.4 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 17.1 KB 17.1 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 12.9 KB | Display | ![]() |
Images | ![]() | 76.3 KB | ||
Filedesc metadata | ![]() | 6.3 KB | ||
Others | ![]() ![]() | 164.9 MB 164.9 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 1.1 MB | Display | ![]() |
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Full document | ![]() | 1.1 MB | Display | |
Data in XML | ![]() | 20.3 KB | Display | |
Data in CIF | ![]() | 26.5 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8bnrMC ![]() 8bnuC ![]() 8brjC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | AnEcTFE octamer | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.828 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: AnEcTFE octamer half2 map
File | emd_16134_half_map_1.map | ||||||||||||
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Annotation | AnEcTFE octamer half2 map | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: AnEcTFE octamer half1 map
File | emd_16134_half_map_2.map | ||||||||||||
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Annotation | AnEcTFE octamer half1 map | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
-Entire : anEcTFE octamer
Entire | Name: anEcTFE octamer |
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Components |
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-Supramolecule #1: anEcTFE octamer
Supramolecule | Name: anEcTFE octamer / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all / Details: heterooctamer complex |
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Source (natural) | Organism: ![]() ![]() |
-Macromolecule #1: 3-ketoacyl-CoA thiolase FadI
Macromolecule | Name: 3-ketoacyl-CoA thiolase FadI / type: protein_or_peptide / ID: 1 / Number of copies: 4 / Enantiomer: LEVO / EC number: acetyl-CoA C-acyltransferase |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 48.20207 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MGSSHHHHHH SQDPMGQVLP LVTRQGDRIA IVSGLRTPFA RQATAFHGIP AVDLGKMVVG ELLARSEIPA EVIEQLVFGQ VVQMPEAPN IAREIVLGTG MNVHTDAYSV SRACATSFQA VANVAESLMA GTIRAGIAGG ADSSSVLPIG VSKKLARVLV D VNKARTMS ...String: MGSSHHHHHH SQDPMGQVLP LVTRQGDRIA IVSGLRTPFA RQATAFHGIP AVDLGKMVVG ELLARSEIPA EVIEQLVFGQ VVQMPEAPN IAREIVLGTG MNVHTDAYSV SRACATSFQA VANVAESLMA GTIRAGIAGG ADSSSVLPIG VSKKLARVLV D VNKARTMS QRLKLFSRLR LRDLMPVPPA VAEYSTGLRM GDTAEQMAKT YGITREQQDA LAHRSHQRAA QAWSDGKLKE EV MTAFIPP YKQPLVEDNN IRGNSSLADY AKLRPAFDRK HGTVTAANST PLTDGAAAVI LMTESRAKEL GLVPLGYLRS YAF TAIDVW QDMLLGPAWS TPLALERAGL TMSDLTLIDM HEAFAAQTLA NIQLLGSERF AREALGRAHA TGEVDDSKFN VLGG SIAYG HPFAATGARM ITQTLHELRR RGGGFGLVTA CAAGGLGAAM VLEAE UniProtKB: 3-ketoacyl-CoA thiolase FadI |
-Macromolecule #2: Fatty acid oxidation complex subunit alpha
Macromolecule | Name: Fatty acid oxidation complex subunit alpha / type: protein_or_peptide / ID: 2 / Number of copies: 4 / Enantiomer: LEVO / EC number: enoyl-CoA hydratase |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 77.169125 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MEMTSAFTLN VRLDNIAVIT IDVPGEKMNT LKAEFASQVR AIIKQLRENK ELRGVVFVSA KPDNFIAGAD INMIGNCKTA QEAEALARQ GQQLMAEIHA LPIQVIAAIH GACLGGGLEL ALACHGRVCT DDPKTVLGLP EVQLGLLPGS GGTQRLPRLI G VSTALEMI ...String: MEMTSAFTLN VRLDNIAVIT IDVPGEKMNT LKAEFASQVR AIIKQLRENK ELRGVVFVSA KPDNFIAGAD INMIGNCKTA QEAEALARQ GQQLMAEIHA LPIQVIAAIH GACLGGGLEL ALACHGRVCT DDPKTVLGLP EVQLGLLPGS GGTQRLPRLI G VSTALEMI LTGKQLRAKQ ALKLGLVDDV VPHSILLEAA VELAKKERPS SRPLPVRERI LAGPLGRALL FKMVGKKTEH KT QGNYPAT ERILEVVETG LAQGTSSGYD AEARAFGELA MTPQSQALRS IFFASTDVKK DPGSDAPPAP LNSVGILGGG LMG GGIAYV TACKAGIPVR IKDINPQGIN HALKYSWDQL EGKVRRRHLK ASERDKQLAL ISGTTDYRGF AHRDLIIEAV FENL ELKQQ MVAEVEQNCA AHTIFASNTS SLPIGDIAAH ATRPEQVIGL HFFSPVEKMP LVEIIPHAGT SAQTIATTVK LAKKQ GKTP IVVRDKAGFY VNRILAPYIN EAIRMLTQGE RVEHIDAALV KFGFPVGPIQ LLDEVGIDTG TKIIPVLEAA YGERFS APA NVVSSILNDD RKGRKNGRGF YLYGQKGRKS KKQVDPAIYP LIGTQGQGRI SAPQVAERCV MLMLNEAVRC VDEQVIR SV RDGDIGAVFG IGFPPFLGGP FRYIDSLGAG EVVAIMQRLA TQYGSRFTPC ERLVEMGARG ESFWKTTATD LQ UniProtKB: Fatty acid oxidation complex subunit alpha |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 0.1 mg/mL |
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Buffer | pH: 8 Details: 50 mM Tris, 500 mM NaCl, 5% glycerol, 2.5 mM DTT, 0.0033% amphipol A8-35, pH 8 |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 QUANTUM (4k x 4k) / Detector mode: COUNTING / Average electron dose: 48.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.2 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
Refinement | Space: REAL / Target criteria: cross-correlation coefficient |
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Output model | ![]() PDB-8bnr: |