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- PDB-8tzp: Structure of human Wnt7a bound to WLS and RECK -

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Basic information

Entry
Database: PDB / ID: 8tzp
TitleStructure of human Wnt7a bound to WLS and RECK
Components
  • Protein Wnt-7a
  • Protein wntless homolog
  • Reversion-inducing cysteine-rich protein with Kazal motifs
KeywordsSIGNALING PROTEIN
Function / homology
Function and homology information


regulation of establishment of blood-brain barrier / : / postsynapse assembly / positive regulation of excitatory synapse assembly / positive regulation of protein localization to presynapse / skeletal muscle satellite cell activation / regulation of axon diameter / Wnt protein secretion / asymmetric protein localization involved in cell fate determination / blood vessel maturation ...regulation of establishment of blood-brain barrier / : / postsynapse assembly / positive regulation of excitatory synapse assembly / positive regulation of protein localization to presynapse / skeletal muscle satellite cell activation / regulation of axon diameter / Wnt protein secretion / asymmetric protein localization involved in cell fate determination / blood vessel maturation / positive regulation of Wnt protein secretion / lens fiber cell development / cerebellar granule cell differentiation / WNT ligand biogenesis and trafficking / oviduct development / synaptic vesicle recycling / central nervous system vasculogenesis / cell proliferation in forebrain / excitatory synapse assembly / uterus morphogenesis / embryonic axis specification / metalloendopeptidase inhibitor activity / cementum mineralization / secondary palate development / Post-translational modification: synthesis of GPI-anchored proteins / presynapse assembly / somatic stem cell division / skeletal muscle satellite cell maintenance involved in skeletal muscle regeneration / stem cell development / sex differentiation / hindbrain development / positive regulation of epithelial cell proliferation involved in wound healing / Wnt-protein binding / negative regulation of extracellular matrix disassembly / regulation of extracellular matrix organization / establishment of blood-brain barrier / dendritic spine morphogenesis / frizzled binding / exocrine pancreas development / dorsal/ventral pattern formation / neurotransmitter secretion / embryonic forelimb morphogenesis / Class B/2 (Secretin family receptors) / Wnt signalosome / sprouting angiogenesis / regulation of postsynapse organization / embryonic hindlimb morphogenesis / regulation of canonical Wnt signaling pathway / positive regulation of synapse assembly / anterior/posterior axis specification / wound healing, spreading of epidermal cells / Wnt signaling pathway, planar cell polarity pathway / endopeptidase inhibitor activity / embryonic digit morphogenesis / cartilage condensation / midbrain development / establishment of cell polarity / organelle membrane / regulation of synaptic vesicle exocytosis / positive regulation of protein metabolic process / mesoderm formation / somatic stem cell population maintenance / cell fate commitment / regulation of angiogenesis / positive regulation of Wnt signaling pathway / positive regulation of excitatory postsynaptic potential / chondrocyte differentiation / canonical Wnt signaling pathway / regulation of presynapse assembly / cellular response to transforming growth factor beta stimulus / coreceptor activity / side of membrane / extracellular matrix organization / embryo implantation / extracellular matrix / positive regulation of endothelial cell migration / endomembrane system / axonogenesis / negative regulation of cell migration / cytokine activity / positive regulation of JNK cascade / intracellular protein transport / serine-type endopeptidase inhibitor activity / trans-Golgi network / negative regulation of neurogenesis / Golgi lumen / response to estrogen / Schaffer collateral - CA1 synapse / Wnt signaling pathway / neuron differentiation / endocytic vesicle membrane / positive regulation of canonical Wnt signaling pathway / response to estradiol / presynapse / cytoplasmic vesicle / early endosome membrane / angiogenesis / early endosome / positive regulation of canonical NF-kappaB signal transduction / receptor ligand activity
Similarity search - Function
Reversion-inducing cysteine-rich protein with Kazal motifs / : / : / : / : / : / : / RECK-like, EGF-like 1 domain / Reversion-inducing cysteine-rich with Kazal motifs, N-terminal / RECK, frizzled-like domain ...Reversion-inducing cysteine-rich protein with Kazal motifs / : / : / : / : / : / : / RECK-like, EGF-like 1 domain / Reversion-inducing cysteine-rich with Kazal motifs, N-terminal / RECK, frizzled-like domain / RECK-like, CC4 domain / RECK-like, EGF-like 1 domain / RECK, fibronectin type I module / Wnt-7 protein / Protein wntless / : / : / Wntless-like, transmembrane domain / Wntless, GOLD domain / Wnt protein, conserved site / Wnt-1 family signature. / Wnt / Wnt, C-terminal domain / wnt family / found in Wnt-1 / Kazal serine protease inhibitors family signature. / Kazal-type serine protease inhibitor domain / Kazal type serine protease inhibitors / Kazal domain superfamily / Kazal domain / Kazal domain profile.
Similarity search - Domain/homology
PALMITOLEIC ACID / Chem-POV / Protein Wnt-7a / Reversion-inducing cysteine-rich protein with Kazal motifs / Protein wntless homolog
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.23 Å
AuthorsQi, X. / Hu, Q. / Li, X.
Funding support United States, 3items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM135343 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)HL160487 United States
Welch FoundationI-1957 United States
CitationJournal: 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
DepositionAug 27, 2023Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 18, 2023Provider: repository / Type: Initial release
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Revision 1.1May 8, 2024Group: Database references / Category: citation / citation_author
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Revision 1.2Nov 6, 2024Group: Data collection / Structure summary
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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Protein Wnt-7a
B: Protein wntless homolog
C: Reversion-inducing cysteine-rich protein with Kazal motifs
hetero molecules


Theoretical massNumber of molelcules
Total (without water)208,9695
Polymers207,9543
Non-polymers1,0142
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein Protein Wnt-7a


Mass: 39062.977 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: WNT7A / Production host: Homo sapiens (human) / References: UniProt: O00755
#2: Protein Protein wntless homolog


Mass: 62317.973 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: WLS / Production host: Homo sapiens (human) / References: UniProt: Q5T9L3
#3: Protein Reversion-inducing cysteine-rich protein with Kazal motifs


Mass: 106573.461 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: RECK / Production host: Homo sapiens (human) / References: UniProt: O95980
#4: Chemical ChemComp-PAM / PALMITOLEIC ACID


Mass: 254.408 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C16H30O2 / Feature type: SUBJECT OF INVESTIGATION
#5: Chemical ChemComp-POV / (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate / POPC


Mass: 760.076 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C42H82NO8P / Feature type: SUBJECT OF INVESTIGATION / Comment: phospholipid*YM
Has ligand of interestY
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Wnt7a-WLS-RECK Complex / Type: COMPLEX / Entity ID: #1-#3 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM softwareName: PHENIX / Category: model refinement
CTF correctionType: NONE
3D reconstructionResolution: 3.23 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 87543 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0037104
ELECTRON MICROSCOPYf_angle_d0.5899595
ELECTRON MICROSCOPYf_dihedral_angle_d6.868963
ELECTRON MICROSCOPYf_chiral_restr0.0411031
ELECTRON MICROSCOPYf_plane_restr0.0061207

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