+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-41768 | ||||||||||||
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Title | Structure of human WLS | ||||||||||||
Map data | |||||||||||||
Sample |
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Keywords | MEMBRANE PROTEIN | ||||||||||||
Function / homology | Function and homology information Wnt protein secretion / positive regulation of Wnt protein secretion / WNT ligand biogenesis and trafficking / cementum mineralization / hindbrain development / Wnt-protein binding / exocrine pancreas development / anterior/posterior axis specification / midbrain development / organelle membrane ...Wnt protein secretion / positive regulation of Wnt protein secretion / WNT ligand biogenesis and trafficking / cementum mineralization / hindbrain development / Wnt-protein binding / exocrine pancreas development / anterior/posterior axis specification / midbrain development / organelle membrane / positive regulation of Wnt signaling pathway / mesoderm formation / endomembrane system / intracellular protein transport / trans-Golgi network / Wnt signaling pathway / endocytic vesicle membrane / positive regulation of canonical Wnt signaling pathway / early endosome membrane / cytoplasmic vesicle / positive regulation of canonical NF-kappaB signal transduction / early endosome / Golgi membrane / endoplasmic reticulum membrane / Golgi apparatus / endoplasmic reticulum / extracellular exosome / identical protein binding / plasma membrane / cytosol Similarity search - Function | ||||||||||||
Biological species | Homo sapiens (human) | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.84 Å | ||||||||||||
Authors | Qi X / Hu Q / Li X | ||||||||||||
Funding support | United States, 3 items
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Citation | Journal: Cell / Year: 2023 Title: Molecular basis of Wnt biogenesis, secretion, and Wnt7-specific signaling. Authors: Xiaofeng Qi / Qinli Hu / Nadia Elghobashi-Meinhardt / Tao Long / Hongwen Chen / Xiaochun Li / Abstract: Wnt proteins are enzymatically lipidated by Porcupine (PORCN) in the ER and bind to Wntless (WLS) for intracellular transport and secretion. Mechanisms governing the transfer of these low-solubility ...Wnt proteins are enzymatically lipidated by Porcupine (PORCN) in the ER and bind to Wntless (WLS) for intracellular transport and secretion. Mechanisms governing the transfer of these low-solubility Wnts from the ER to the extracellular space remain unclear. Through structural and functional analyses of Wnt7a, a crucial Wnt involved in central nervous system angiogenesis and blood-brain barrier maintenance, we have elucidated the principles of Wnt biogenesis and Wnt7-specific signaling. The Wnt7a-WLS complex binds to calreticulin (CALR), revealing that CALR functions as a chaperone to facilitate Wnt transfer from PORCN to WLS during Wnt biogenesis. Our structures, functional analyses, and molecular dynamics simulations demonstrate that a phospholipid in the core of Wnt-bound WLS regulates the association and dissociation between Wnt and WLS, suggesting a lipid-mediated Wnt secretion mechanism. Finally, the structure of Wnt7a bound to RECK, a cell-surface Wnt7 co-receptor, reveals how RECK engages the N-terminal domain of Wnt7a to activate Wnt7-specific signaling. | ||||||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_41768.map.gz | 78.8 MB | EMDB map data format | |
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Header (meta data) | emd-41768-v30.xml emd-41768.xml | 13.5 KB 13.5 KB | Display Display | EMDB header |
Images | emd_41768.png | 38 KB | ||
Filedesc metadata | emd-41768.cif.gz | 5.2 KB | ||
Others | emd_41768_half_map_1.map.gz emd_41768_half_map_2.map.gz | 77.6 MB 77.6 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-41768 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-41768 | HTTPS FTP |
-Validation report
Summary document | emd_41768_validation.pdf.gz | 910.1 KB | Display | EMDB validaton report |
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Full document | emd_41768_full_validation.pdf.gz | 909.7 KB | Display | |
Data in XML | emd_41768_validation.xml.gz | 12.8 KB | Display | |
Data in CIF | emd_41768_validation.cif.gz | 15 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-41768 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-41768 | HTTPS FTP |
-Related structure data
Related structure data | 8tzsMC 8tzoC 8tzpC M: atomic model generated by this map C: citing same article (ref.) |
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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_41768.map.gz / Format: CCP4 / Size: 83.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.738 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #1
File | emd_41768_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #2
File | emd_41768_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Sample components
-Entire : WLS
Entire | Name: WLS |
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Components |
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-Supramolecule #1: WLS
Supramolecule | Name: WLS / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: Homo sapiens (human) |
-Macromolecule #1: Protein wntless homolog
Macromolecule | Name: Protein wntless homolog / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 62.317973 KDa |
Recombinant expression | Organism: Homo sapiens (human) |
Sequence | String: MAGAIIENMS TKKLCIVGGI LLVFQIIAFL VGGLIAPGPT TAVSYMSVKC VDARKNHHKT KWFVPWGPNH CDKIRDIEEA IPREIEAND IVFSVHIPLP HMEMSPWFQF MLFILQLDIA FKLNNQIREN AEVSMDVSLA YRDDAFAEWT EMAHERVPRK L KCTFTSPK ...String: MAGAIIENMS TKKLCIVGGI LLVFQIIAFL VGGLIAPGPT TAVSYMSVKC VDARKNHHKT KWFVPWGPNH CDKIRDIEEA IPREIEAND IVFSVHIPLP HMEMSPWFQF MLFILQLDIA FKLNNQIREN AEVSMDVSLA YRDDAFAEWT EMAHERVPRK L KCTFTSPK TPEHEGRYYE CDVLPFMEIG SVAHKFYLLN IRLPVNEKKK INVGIGEIKD IRLVGIHQNG GFTKVWFAMK TF LTPSIFI IMVWYWRRIT MMSRPPVLLE KVIFALGISM TFINIPVEWF SIGFDWTWML LFGDIRQGIF YAMLLSFWII FCG EHMMDQ HERNHIAGYW KQVGPIAVGS FCLFIFDMCE RGVQLTNPFY SIWTTDIGTE LAMAFIIVAG ICLCLYFLFL CFMV FQVFR NISGKQSSLP AMSKVRRLHY EGLIFRFKFL MLITLACAAM TVIFFIVSQV TEGHWKWGGV TVQVNSAFFT GIYGM WNLY VFALMFLYAP SHKNYGEDQS NGDLGVHSGE ELQLTTTITH VDGPTEIYKL TRKEAQE UniProtKB: Protein wntless homolog |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 60.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.8 µm / Nominal defocus min: 0.8 µm |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Startup model | Type of model: OTHER |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.84 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 304150 |
Initial angle assignment | Type: NOT APPLICABLE |
Final angle assignment | Type: NOT APPLICABLE |