1LCS

RECEPTOR-BINDING DOMAIN FROM SUBGROUP B FELINE LEUKEMIA VIRUS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.216 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 2.0 of the entry. See complete history


Literature

Structure and Mechanism of a Coreceptor for Infection by a pathogenic feline retrovirus

Barnett, A.L.Wensel, D.L.Li, W.Fass, D.Cunningham, J.M.

(2003) J Virol 77: 2717-2729

  • DOI: 10.1128/jvi.77.4.2717-2729.2003
  • Primary Citation of Related Structures:  
    1LCS

  • PubMed Abstract: 
  • Infection of T lymphocytes by the cytopathic retrovirus feline leukemia virus subgroup T (FeLV-T) requires FeLIX, a cellular coreceptor that is encoded by an endogenous provirus and closely resembles the receptor-binding domain (RBD) of feline leukemia virus subgroup B (FeLV-B) ...

    Infection of T lymphocytes by the cytopathic retrovirus feline leukemia virus subgroup T (FeLV-T) requires FeLIX, a cellular coreceptor that is encoded by an endogenous provirus and closely resembles the receptor-binding domain (RBD) of feline leukemia virus subgroup B (FeLV-B). We determined the structure of FeLV-B RBD, which has FeLIX activity, to a 2.5-A resolution by X-ray crystallography. The structure of the receptor-specific subdomain of this glycoprotein differs dramatically from that of Friend murine leukemia virus (Fr-MLV), which binds a different cell surface receptor. Remarkably, we find that Fr-MLV RBD also activates FeLV-T infection of cells expressing the Fr-MLV receptor and that FeLV-B RBD is a competitive inhibitor of infection under these conditions. These studies suggest that FeLV-T infection relies on the following property of mammalian leukemia virus RBDs: the ability to couple interaction with one of a variety of receptors to the activation of a conserved membrane fusion mechanism. A comparison of the FeLV-B and Fr-MLV RBD structures illustrates how receptor-specific regions are linked to conserved elements critical for postbinding events in virus entry.


    Organizational Affiliation

    Department of Medicine, Howard Hughes Medical Institute, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
FELINE LEUKEMIA VIRUS RECEPTOR-BINDING DOMAINA, B211Feline leukemia virus strain B/lambda-B1Mutation(s): 0 
Gene Names: env
UniProt
Find proteins for P11261 (Feline leukemia virus (strain B/lambda-B1))
Explore P11261 
Go to UniProtKB:  P11261
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP11261
Protein Feature View
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseC, D, E 2N-Glycosylation Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Entity ID: 3
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
2-acetamido-2-deoxy-alpha-D-glucopyranose-(1-2)-beta-D-mannopyranose-(1-6)-alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseF 5N-Glycosylation Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G02577WH
GlyCosmos:  G02577WH
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TOE
Query on TOE

Download Ideal Coordinates CCD File 
G [auth A]2-[2-(2-METHOXY-ETHOXY)-ETHOXY]-ETHOXYL
C7 H16 O4
JLGLQAWTXXGVEM-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.216 
  • Space Group: P 65 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 93.4α = 90
b = 93.4β = 90
c = 231.5γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-04-08
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Source and taxonomy, Version format compliance
  • Version 1.3: 2011-11-16
    Changes: Atomic model
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary