5I04

Crystal structure of the orphan region of human endoglin/CD105


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.42 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.222 

Starting Models: experimental
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Ligand Structure Quality Assessment 


This is version 2.2 of the entry. See complete history


Literature

Structural Basis of the Human Endoglin-BMP9 Interaction: Insights into BMP Signaling and HHT1.

Saito, T.Bokhove, M.Croci, R.Zamora-Caballero, S.Han, L.Letarte, M.de Sanctis, D.Jovine, L.

(2017) Cell Rep 19: 1917-1928

  • DOI: https://doi.org/10.1016/j.celrep.2017.05.011
  • Primary Citation of Related Structures:  
    5HZV, 5HZW, 5I04, 5I05

  • PubMed Abstract: 

    Endoglin (ENG)/CD105 is an essential endothelial cell co-receptor of the transforming growth factor β (TGF-β) superfamily, mutated in hereditary hemorrhagic telangiectasia type 1 (HHT1) and involved in tumor angiogenesis and preeclampsia. Here, we present crystal structures of the ectodomain of human ENG and its complex with the ligand bone morphogenetic protein 9 (BMP9). BMP9 interacts with a hydrophobic surface of the N-terminal orphan domain of ENG, which adopts a new duplicated fold generated by circular permutation. The interface involves residues mutated in HHT1 and overlaps with the epitope of tumor-suppressing anti-ENG monoclonal TRC105. The structure of the C-terminal zona pellucida module suggests how two copies of ENG embrace homodimeric BMP9, whose binding is compatible with ligand recognition by type I but not type II receptors. These findings shed light on the molecular basis of the BMP signaling cascade, with implications for future therapeutic interventions in this fundamental pathway.


  • Organizational Affiliation

    Department of Biosciences and Nutrition and Center for Innovative Medicine, Karolinska Institutet, Huddinge 14183, Sweden.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Maltose-binding periplasmic protein,Endoglin692Escherichia coli K-12Homo sapiens
This entity is chimeric
Mutation(s): 13 
Gene Names: malEb4034JW3994ENGEND
UniProt & NIH Common Fund Data Resources
Find proteins for P0AEX9 (Escherichia coli (strain K12))
Explore P0AEX9 
Go to UniProtKB:  P0AEX9
Find proteins for P17813 (Homo sapiens)
Explore P17813 
Go to UniProtKB:  P17813
PHAROS:  P17813
GTEx:  ENSG00000106991 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsP17813P0AEX9
Glycosylation
Glycosylation Sites: 1Go to GlyGen: P17813-1
Sequence Annotations
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose
B
2N/A
Glycosylation Resources
GlyTouCan:  G07411ON
GlyCosmos:  G07411ON
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 2
IDChains NameType/Class2D Diagram3D Interactions
PRD_900001
Query on PRD_900001
B
alpha-maltoseOligosaccharide / Nutrient
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.42 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.222 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 114.15α = 90
b = 114.15β = 90
c = 120.62γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Karolinska InstitutetSweden--
Center for BiosciencesSweden--
Swedish Research CouncilSweden2012-5093
Gustafsson Foundation for Research in Natural Sciences and MedicineSweden--
Sven and Ebba-Christina Hagberg foundationSweden--
European Molecular Biology Organization--
European UnionERC 260759

Revision History  (Full details and data files)

  • Version 1.0: 2017-06-07
    Type: Initial release
  • Version 1.1: 2017-06-14
    Changes: Database references
  • Version 1.2: 2017-09-06
    Changes: Author supporting evidence
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Non-polymer description, Structure summary
  • Version 2.1: 2024-01-10
    Changes: Data collection, Database references, Refinement description, Structure summary
  • Version 2.2: 2024-10-16
    Changes: Structure summary