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Open data
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Basic information
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Title | Structure of human Wnt7a bound to WLS and RECK | ||||||||||||
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![]() | SIGNALING PROTEIN | ||||||||||||
Function / homology | ![]() regulation of establishment of blood-brain barrier / : / postsynapse assembly / negative regulation of metalloendopeptidase activity / positive regulation of excitatory synapse assembly / regulation of axon diameter / positive regulation of protein localization to presynapse / skeletal muscle satellite cell activation / Wnt protein secretion / asymmetric protein localization involved in cell fate determination ...regulation of establishment of blood-brain barrier / : / postsynapse assembly / negative regulation of metalloendopeptidase activity / positive regulation of excitatory synapse assembly / regulation of axon diameter / positive regulation of protein localization to presynapse / skeletal muscle satellite cell activation / Wnt protein secretion / asymmetric protein localization involved in cell fate determination / excitatory synapse assembly / cerebellar granule cell differentiation / blood vessel maturation / lens fiber cell development / positive regulation of Wnt protein secretion / synaptic vesicle recycling / WNT ligand biogenesis and trafficking / oviduct development / central nervous system vasculogenesis / cell proliferation in forebrain / uterus morphogenesis / skeletal muscle satellite cell maintenance involved in skeletal muscle regeneration / secondary palate development / embryonic axis specification / Post-translational modification: synthesis of GPI-anchored proteins / cementum mineralization / metalloendopeptidase inhibitor activity / somatic stem cell division / presynapse assembly / sex differentiation / positive regulation of epithelial cell proliferation involved in wound healing / hindbrain development / stem cell development / Wnt-protein binding / establishment of blood-brain barrier / exocrine pancreas development / neurotransmitter secretion / dendritic spine morphogenesis / frizzled binding / dorsal/ventral pattern formation / embryonic forelimb morphogenesis / Wnt signalosome / Class B/2 (Secretin family receptors) / embryonic hindlimb morphogenesis / positive regulation of synapse assembly / wound healing, spreading of epidermal cells / sprouting angiogenesis / Wnt signaling pathway, planar cell polarity pathway / anterior/posterior axis specification / regulation of postsynapse organization / midbrain development / regulation of synaptic vesicle exocytosis / embryonic digit morphogenesis / cartilage condensation / endopeptidase inhibitor activity / establishment of cell polarity / somatic stem cell population maintenance / positive regulation of excitatory postsynaptic potential / regulation of presynapse assembly / mesoderm formation / positive regulation of Wnt signaling pathway / cell fate commitment / canonical Wnt signaling pathway / endomembrane system / regulation of angiogenesis / chondrocyte differentiation / side of membrane / cellular response to transforming growth factor beta stimulus / positive regulation of protein metabolic process / embryo implantation / positive regulation of endothelial cell migration / negative regulation of cell migration / extracellular matrix organization / axonogenesis / extracellular matrix / cytokine activity / positive regulation of JNK cascade / intracellular protein transport / Schaffer collateral - CA1 synapse / serine-type endopeptidase inhibitor activity / neuron differentiation / trans-Golgi network / Wnt signaling pathway / negative regulation of neurogenesis / Golgi lumen / response to estrogen / endocytic vesicle membrane / positive regulation of canonical Wnt signaling pathway / presynapse / response to estradiol / early endosome membrane / cytoplasmic vesicle / angiogenesis / positive regulation of canonical NF-kappaB signal transduction / receptor ligand activity / early endosome / endoplasmic reticulum lumen / Golgi membrane / signaling receptor binding / glutamatergic synapse Similarity search - Function | ||||||||||||
Biological species | ![]() | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.23 Å | ||||||||||||
![]() | Qi X / Hu Q / Li X | ||||||||||||
Funding support | ![]()
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![]() | ![]() 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 | ![]() | 117.9 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 17.7 KB 17.7 KB | Display Display | ![]() |
Images | ![]() | 48.2 KB | ||
Filedesc metadata | ![]() | 6.5 KB | ||
Others | ![]() ![]() | 116 MB 116 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 998.5 KB | Display | ![]() |
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Full document | ![]() | 998.1 KB | Display | |
Data in XML | ![]() | 14 KB | Display | |
Data in CIF | ![]() | 16.4 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8tzpMC ![]() 8tzoC ![]() 8tzsC 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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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: #1
File | emd_41765_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #2
File | emd_41765_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
-Entire : Wnt7a-WLS-RECK Complex
Entire | Name: Wnt7a-WLS-RECK Complex |
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Components |
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-Supramolecule #1: Wnt7a-WLS-RECK Complex
Supramolecule | Name: Wnt7a-WLS-RECK Complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3 |
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Source (natural) | Organism: ![]() |
-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: ![]() |
Molecular weight | Theoretical: 39.062977 KDa |
Recombinant expression | Organism: ![]() |
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: Protein Wnt-7a |
-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: ![]() |
Molecular weight | Theoretical: 62.317973 KDa |
Recombinant expression | Organism: ![]() |
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: Reversion-inducing cysteine-rich protein with Kazal motifs
Macromolecule | Name: Reversion-inducing cysteine-rich protein with Kazal motifs type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 106.573461 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MATVRASLRG ALLLLLAVAG VAEVAGGLAP GSAGALCCNH SKDNQMCRDV CEQIFSSKSE SRLKHLLQRA PDYCPETMVE IWNCMNSSL PGVFKKSDGW VGLGCCELAI ALECRQACKQ ASSKNDISKV CRKEYENALF SCISRNEMGS VCCSYAGHHT N CREYCQAI ...String: MATVRASLRG ALLLLLAVAG VAEVAGGLAP GSAGALCCNH SKDNQMCRDV CEQIFSSKSE SRLKHLLQRA PDYCPETMVE IWNCMNSSL PGVFKKSDGW VGLGCCELAI ALECRQACKQ ASSKNDISKV CRKEYENALF SCISRNEMGS VCCSYAGHHT N CREYCQAI FRTDSSPGPS QIKAVENYCA SISPQLIHCV NNYTQSYPMR NPTDSLYCCD RAEDHACQNA CKRILMSKKT EM EIVDGLI EGCKTQPLPQ DPLWQCFLES SQSVHPGVTV HPPPSTGLDG AKLHCCSKAN TSTCRELCTK LYSMSWGNTQ SWQ EFDRFC EYNPVEVSML TCLADVREPC QLGCRNLTYC TNFNNRPTEL FRSCNAQSDQ GAMNDMKLWE KGSIKMPFIN IPVL DIKKC QPEMWKAIAC SLQIKPCHSK SRGSIICKSD CVEILKKCGD QNKFPEDHTA ESICELLSPT DDLKNCIPLD TYLRP STLG NIVEEVTHPC NPNPCPANEL CEVNRKGCPS GDPCLPYFCV QGCKLGEASD FIVRQGTLIQ VPSSAGEVGC YKICSC GQS GLLENCMEMH CIDLQKSCIV GGKRKSHGTS FSIDCNVCSC FAGNLVCSTR LCLSEHSSED DRRTFTGLPC NCADQFV PV CGQNGRTYPS ACIARCVGLQ DHQFEFGSCM SKDPCNPNPC QKNQRCIPKP QVCLTTFDKF GCSQYECVPR QLACDQVQ D PVCDTDHMEH NNLCTLYQRG KSLSYKGPCQ PFCRATEPVC GHNGETYSSV CAAYSDRVAV DYYGDCQAVG VLSEHSSVA ECASVKCPSL LAAGCKPIIP PGACCPLCAG MLRVLFDKEK LDTIAKVTNK KPITVLEILQ KIRMHVSVPQ CDVFGYFSIE SEIVILIIP VDHYPKALQI EACNKEAEKI ESLINSDSPT LASHVPLSAL IISQVQVSSS VPSAGVRARP SCHSLLLPLS L GLALHLLW TYN UniProtKB: Reversion-inducing cysteine-rich protein with Kazal motifs |
-Macromolecule #4: PALMITOLEIC ACID
Macromolecule | Name: PALMITOLEIC ACID / type: ligand / ID: 4 / Number of copies: 1 / Formula: PAM |
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Molecular weight | Theoretical: 254.408 Da |
Chemical component information | ![]() ChemComp-PAM: |
-Macromolecule #5: (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: 5 / Number of copies: 1 / Formula: POV |
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Molecular weight | Theoretical: 760.076 Da |
Chemical component information | ![]() ChemComp-POV: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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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 K3 (6k x 4k) / Average electron dose: 60.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Startup model | Type of model: OTHER |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.23 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 87543 |
Initial angle assignment | Type: NOT APPLICABLE |
Final angle assignment | Type: NOT APPLICABLE |