1SL4

Crystal Structure of DC-SIGN carbohydrate recognition domain complexed with Man4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.223 

wwPDB Validation 3D Report Full Report



Literature

Structural basis for distinct ligand-binding and targeting properties of the receptors DC-SIGN and DC-SIGNR

Guo, Y.Feinberg, H.Conroy, E.Mitchell, D.A.Alvarez, R.Blixt, O.Taylor, M.E.Weis, W.I.Drickamer, K.

(2004) Nat Struct Mol Biol 11: 591-598

  • DOI: 10.1038/nsmb784
  • Primary Citation of Related Structures:  
    1SL6, 1SL5, 1SL4

  • PubMed Abstract: 
  • Both the dendritic cell receptor DC-SIGN and the closely related endothelial cell receptor DC-SIGNR bind human immunodeficiency virus and enhance infection. However, biochemical and structural comparison of these receptors now reveals that they have ...

    Both the dendritic cell receptor DC-SIGN and the closely related endothelial cell receptor DC-SIGNR bind human immunodeficiency virus and enhance infection. However, biochemical and structural comparison of these receptors now reveals that they have very different physiological functions. By screening an extensive glycan array, we demonstrated that DC-SIGN and DC-SIGNR have distinct ligand-binding properties. Our structural and mutagenesis data explain how both receptors bind high-mannose oligosaccharides on enveloped viruses and why only DC-SIGN binds blood group antigens, including those present on microorganisms. DC-SIGN mediates endocytosis, trafficking as a recycling receptor and releasing ligand at endosomal pH, whereas DC-SIGNR does not release ligand at low pH or mediate endocytosis. Thus, whereas DC-SIGN has dual ligand-binding properties and functions both in adhesion and in endocytosis of pathogens, DC-SIGNR binds a restricted set of ligands and has only the properties of an adhesion receptor.


    Organizational Affiliation

    Glycobiology Institute, Department of Biochemistry, University of Oxford, Oxford OX1 3QU, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
mDC-SIGN1B type I isoformA155Homo sapiensMutation(s): 0 
Gene Names: CD209CLEC4L
Find proteins for Q9NNX6 (Homo sapiens)
Explore Q9NNX6 
Go to UniProtKB:  Q9NNX6
NIH Common Fund Data Resources
PHAROS  Q9NNX6
Protein Feature View
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  • Reference Sequence
Oligosaccharides

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Entity ID: 2
MoleculeChainsChain Length2D Diagram Glycosylation
alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]alpha-D-mannopyranose-(1-6)-alpha-D-mannopyranose
B
4 N/A
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.223 
  • Space Group: P 43
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 55.66α = 90
b = 55.66β = 90
c = 53.33γ = 90
Software Package:
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
CCP4data scaling
COMOphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-06-15
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary