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Yorodumi- EMDB-13764: Structure of Hedgehog acyltransferase (HHAT) in complex with mega... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-13764 | |||||||||||||||
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Title | Structure of Hedgehog acyltransferase (HHAT) in complex with megabody 177 bound to non-hydrolysable palmitoyl-CoA (Composite Map) | |||||||||||||||
Map data | Composite map generated in Phenix from two focus refined maps. | |||||||||||||||
Sample |
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Function / homology | Function and homology information N-terminal peptidyl-L-cysteine N-palmitoylation / O-acyltransferase activity / HHAT G278V doesn't palmitoylate Hh-Np / palmitoyltransferase activity / smoothened signaling pathway / Transferases; Acyltransferases; Transferring groups other than aminoacyl groups / Hedgehog ligand biogenesis / Golgi membrane / endoplasmic reticulum membrane / GTP binding ...N-terminal peptidyl-L-cysteine N-palmitoylation / O-acyltransferase activity / HHAT G278V doesn't palmitoylate Hh-Np / palmitoyltransferase activity / smoothened signaling pathway / Transferases; Acyltransferases; Transferring groups other than aminoacyl groups / Hedgehog ligand biogenesis / Golgi membrane / endoplasmic reticulum membrane / GTP binding / Golgi apparatus / endoplasmic reticulum Similarity search - Function | |||||||||||||||
Biological species | Escherichia coli K-12 (bacteria) / Homo sapiens (human) | |||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.7 Å | |||||||||||||||
Authors | Coupland C / Carrique L / Siebold C | |||||||||||||||
Funding support | European Union, 4 items
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Citation | Journal: Mol Cell / Year: 2021 Title: Structure, mechanism, and inhibition of Hedgehog acyltransferase. Authors: Claire E Coupland / Sebastian A Andrei / T Bertie Ansell / Loic Carrique / Pramod Kumar / Lea Sefer / Rebekka A Schwab / Eamon F X Byrne / Els Pardon / Jan Steyaert / Anthony I Magee / ...Authors: Claire E Coupland / Sebastian A Andrei / T Bertie Ansell / Loic Carrique / Pramod Kumar / Lea Sefer / Rebekka A Schwab / Eamon F X Byrne / Els Pardon / Jan Steyaert / Anthony I Magee / Thomas Lanyon-Hogg / Mark S P Sansom / Edward W Tate / Christian Siebold / Abstract: The Sonic Hedgehog (SHH) morphogen pathway is fundamental for embryonic development and stem cell maintenance and is implicated in various cancers. A key step in signaling is transfer of a palmitate ...The Sonic Hedgehog (SHH) morphogen pathway is fundamental for embryonic development and stem cell maintenance and is implicated in various cancers. A key step in signaling is transfer of a palmitate group to the SHH N terminus, catalyzed by the multi-pass transmembrane enzyme Hedgehog acyltransferase (HHAT). We present the high-resolution cryo-EM structure of HHAT bound to substrate analog palmityl-coenzyme A and a SHH-mimetic megabody, revealing a heme group bound to HHAT that is essential for HHAT function. A structure of HHAT bound to potent small-molecule inhibitor IMP-1575 revealed conformational changes in the active site that occlude substrate binding. Our multidisciplinary analysis provides a detailed view of the mechanism by which HHAT adapts the membrane environment to transfer an acyl chain across the endoplasmic reticulum membrane. This structure of a membrane-bound O-acyltransferase (MBOAT) superfamily member provides a blueprint for other protein-substrate MBOATs and a template for future drug discovery. | |||||||||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_13764.map.gz | 82.8 MB | EMDB map data format | |
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Header (meta data) | emd-13764-v30.xml emd-13764.xml | 21.6 KB 21.6 KB | Display Display | EMDB header |
Images | emd_13764.png | 592.5 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-13764 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-13764 | HTTPS FTP |
-Validation report
Summary document | emd_13764_validation.pdf.gz | 394.2 KB | Display | EMDB validaton report |
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Full document | emd_13764_full_validation.pdf.gz | 393.8 KB | Display | |
Data in XML | emd_13764_validation.xml.gz | 6.8 KB | Display | |
Data in CIF | emd_13764_validation.cif.gz | 7.8 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-13764 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-13764 | HTTPS FTP |
-Related structure data
Related structure data | 7q1uMC 7q6zC C: citing same article (ref.) M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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-Map
File | Download / File: emd_13764.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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Annotation | Composite map generated in Phenix from two focus refined maps. | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.1053 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Sample components
+Entire : Hedgehog acyltransferase (HHAT) bound to non hydrolysable palmito...
+Supramolecule #1: Hedgehog acyltransferase (HHAT) bound to non hydrolysable palmito...
+Supramolecule #2: Megabody 177
+Supramolecule #3: Hedgehog acyltransferase (HHAT) bound to non hydrolysable palmito...
+Macromolecule #1: Protein-cysteine N-palmitoyltransferase HHAT
+Macromolecule #2: Megabody 177
+Macromolecule #3: CHOLESTEROL
+Macromolecule #4: PROTOPORPHYRIN IX CONTAINING FE
+Macromolecule #5: [[(2~{R},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-4-oxidanyl-3-ph...
+Macromolecule #6: MAGNESIUM ION
+Macromolecule #7: PALMITIC ACID
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Concentration | 4 mg/mL | ||||||||||||
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Buffer | pH: 8 Component:
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Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 300 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Atmosphere: AIR / Pretreatment - Pressure: 101.325 kPa | ||||||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 293 K / Instrument: FEI VITROBOT MARK IV |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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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: 3637 / Average electron dose: 54.8 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | C2 aperture diameter: 70.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.0 µm |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
+Image processing
-Atomic model buiding 1
Refinement | Space: REAL / Protocol: AB INITIO MODEL / Overall B value: 56 |
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Output model | PDB-7q1u: |