+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-41764 | ||||||||||||
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Title | Structure of human Wnt7a bound to WLS and CALR | ||||||||||||
Map data | |||||||||||||
Sample |
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Keywords | SIGNALING PROTEIN | ||||||||||||
Function / homology | Function and homology information Wnt protein secretion / Calnexin/calreticulin cycle / cytolytic granule / positive regulation of Wnt protein secretion / WNT ligand biogenesis and trafficking / positive regulation of dendritic cell chemotaxis / Assembly of Viral Components at the Budding Site / ATF6 (ATF6-alpha) activates chaperone genes / negative regulation of trophoblast cell migration / cortical granule ...Wnt protein secretion / Calnexin/calreticulin cycle / cytolytic granule / positive regulation of Wnt protein secretion / WNT ligand biogenesis and trafficking / positive regulation of dendritic cell chemotaxis / Assembly of Viral Components at the Budding Site / ATF6 (ATF6-alpha) activates chaperone genes / negative regulation of trophoblast cell migration / cortical granule / cellular response to electrical stimulus / nuclear receptor-mediated glucocorticoid signaling pathway / complement component C1q complex binding / regulation of meiotic nuclear division / negative regulation of retinoic acid receptor signaling pathway / cementum mineralization / response to glycoside / endoplasmic reticulum quality control compartment / sequestering of calcium ion / sarcoplasmic reticulum lumen / protein folding in endoplasmic reticulum / hormone binding / hindbrain development / negative regulation of intracellular steroid hormone receptor signaling pathway / Wnt-protein binding / nuclear export signal receptor activity / cardiac muscle cell differentiation / exocrine pancreas development / molecular sequestering activity / anterior/posterior axis specification / Scavenging by Class A Receptors / protein maturation by protein folding / Scavenging by Class F Receptors / midbrain development / cortical actin cytoskeleton organization / nuclear androgen receptor binding / cellular response to lithium ion / organelle membrane / response to testosterone / positive regulation of Wnt signaling pathway / mesoderm formation / protein localization to nucleus / negative regulation of neuron differentiation / smooth endoplasmic reticulum / endomembrane system / positive regulation of cell cycle / positive regulation of substrate adhesion-dependent cell spreading / positive regulation of phagocytosis / ERAD pathway / endocytic vesicle lumen / protein folding chaperone / endoplasmic reticulum-Golgi intermediate compartment membrane / protein export from nucleus / positive regulation of endothelial cell migration / acrosomal vesicle / intracellular protein transport / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / lumenal side of endoplasmic reticulum membrane / peptide binding / trans-Golgi network / peptide antigen assembly with MHC class I protein complex / MHC class I peptide loading complex / cellular response to virus / Wnt signaling pathway / intracellular calcium ion homeostasis / positive regulation of non-canonical NF-kappaB signal transduction / phagocytic vesicle membrane / cellular senescence / endocytic vesicle membrane / positive regulation of canonical Wnt signaling pathway / unfolded protein binding / integrin binding / protein folding / response to estradiol / nuclear envelope / protein-folding chaperone binding / ER-Phagosome pathway / early endosome membrane / cytoplasmic vesicle / spermatogenesis / carbohydrate binding / collagen-containing extracellular matrix / regulation of apoptotic process / positive regulation of canonical NF-kappaB signal transduction / early endosome / negative regulation of translation / protein stabilization / ribosome / iron ion binding / response to xenobiotic stimulus / endoplasmic reticulum lumen / Golgi membrane / external side of plasma membrane / focal adhesion / negative regulation of DNA-templated transcription / mRNA binding / ubiquitin protein ligase binding / calcium ion binding / positive regulation of cell population proliferation / endoplasmic reticulum membrane Similarity search - Function | ||||||||||||
Biological species | Homo sapiens (human) | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.1 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_41764.map.gz | 117.8 MB | EMDB map data format | |
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Header (meta data) | emd-41764-v30.xml emd-41764.xml | 17.2 KB 17.2 KB | Display Display | EMDB header |
Images | emd_41764.png | 56.5 KB | ||
Filedesc metadata | emd-41764.cif.gz | 6.5 KB | ||
Others | emd_41764_half_map_1.map.gz emd_41764_half_map_2.map.gz | 115.9 MB 115.9 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-41764 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-41764 | HTTPS FTP |
-Validation report
Summary document | emd_41764_validation.pdf.gz | 916.5 KB | Display | EMDB validaton report |
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Full document | emd_41764_full_validation.pdf.gz | 916 KB | Display | |
Data in XML | emd_41764_validation.xml.gz | 14 KB | Display | |
Data in CIF | emd_41764_validation.cif.gz | 16.6 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-41764 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-41764 | HTTPS FTP |
-Related structure data
Related structure data | 8tzoMC 8tzpC 8tzsC 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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Related items in Molecule of the Month |
-Map
File | Download / File: emd_41764.map.gz / Format: CCP4 / Size: 125 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: 0.83 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #2
File | emd_41764_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_41764_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Sample components
-Entire : Wnt7a-WLS-CALR Complex
Entire | Name: Wnt7a-WLS-CALR Complex |
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Components |
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-Supramolecule #1: Wnt7a-WLS-CALR Complex
Supramolecule | Name: Wnt7a-WLS-CALR Complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3 |
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Source (natural) | Organism: Homo sapiens (human) |
-Macromolecule #1: Protein Wnt-7a
Macromolecule | Name: Protein Wnt-7a / 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: 39.062977 KDa |
Recombinant expression | Organism: Homo sapiens (human) |
Sequence | String: MNRKARRCLG HLFLSLGMVY LRIGGFSSVV ALGASIICNK IPGLAPRQRA ICQSRPDAII VIGEGSQMGL DECQFQFRNG RWNCSALGE RTVFGKELKV GSREAAFTYA IIAAGVAHAI TAACTQGNLS DCGCDKEKQG QYHRDEGWKW GGCSADIRYG I GFAKVFVD ...String: MNRKARRCLG HLFLSLGMVY LRIGGFSSVV ALGASIICNK IPGLAPRQRA ICQSRPDAII VIGEGSQMGL DECQFQFRNG RWNCSALGE RTVFGKELKV GSREAAFTYA IIAAGVAHAI TAACTQGNLS DCGCDKEKQG QYHRDEGWKW GGCSADIRYG I GFAKVFVD AREIKQNART LMNLHNNEAG RKILEENMKL ECKCHGVSGS CTTKTCWTTL PQFRELGYVL KDKYNEAVHV EP VRASRNK RPTFLKIKKP LSYRKPMDTD LVYIEKSPNY CEEDPVTGSV GTQGRACNKT APQASGCDLM CCGRGYNTHQ YAR VWQCNC KFHWCCYVKC NTCSERTEMY TCK UniProtKB: UNIPROTKB: O00755 |
-Macromolecule #2: Protein wntless homolog
Macromolecule | Name: Protein wntless homolog / type: protein_or_peptide / ID: 2 / 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 |
-Macromolecule #3: Calreticulin
Macromolecule | Name: Calreticulin / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 48.198379 KDa |
Sequence | String: MLLSVPLLLG LLGLAVAEPA VYFKEQFLDG DGWTSRWIES KHKSDFGKFV LSSGKFYGDE EKDKGLQTSQ DARFYALSAS FEPFSNKGQ TLVVQFTVKH EQNIDCGGGY VKLFPNSLDQ TDMHGDSEYN IMFGPDICGP GTKKVHVIFN YKGKNVLINK D IRCKDDEF ...String: MLLSVPLLLG LLGLAVAEPA VYFKEQFLDG DGWTSRWIES KHKSDFGKFV LSSGKFYGDE EKDKGLQTSQ DARFYALSAS FEPFSNKGQ TLVVQFTVKH EQNIDCGGGY VKLFPNSLDQ TDMHGDSEYN IMFGPDICGP GTKKVHVIFN YKGKNVLINK D IRCKDDEF THLYTLIVRP DNTYEVKIDN SQVESGSLED DWDFLPPKKI KDPDASKPED WDERAKIDDP TDSKPEDWDK PE HIPDPDA KKPEDWDEEM DGEWEPPVIQ NPEYKGEWKP RQIDNPDYKG TWIHPEIDNP EYSPDPSIYA YDNFGVLGLD LWQ VKSGTI FDNFLITNDE AYAEEFGNET WGVTKAAEKQ MKDKQDEEQR LKEEEEDKKR KEEEEAEDKE DDEDKDEDEE DEED KEEDE EEDVPGQAKD EL UniProtKB: Calreticulin |
-Macromolecule #5: PALMITOLEIC ACID
Macromolecule | Name: PALMITOLEIC ACID / type: ligand / ID: 5 / Number of copies: 1 / Formula: PAM |
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Molecular weight | Theoretical: 254.408 Da |
Chemical component information | ChemComp-PAM: |
-Macromolecule #6: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(tri...
Macromolecule | Name: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate type: ligand / ID: 6 / Number of copies: 1 / Formula: POV |
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Molecular weight | Theoretical: 760.076 Da |
Chemical component information | ChemComp-POV: |
-Macromolecule #7: CALCIUM ION
Macromolecule | Name: CALCIUM ION / type: ligand / ID: 7 / Number of copies: 1 / Formula: CA |
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Molecular weight | Theoretical: 40.078 Da |
-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: GATAN K3 (6k 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: 2.0 µm / Nominal defocus min: 1.0 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: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 276377 |
Initial angle assignment | Type: NOT APPLICABLE |
Final angle assignment | Type: NOT APPLICABLE |