4GOS

Crystal structure of human B7-H4 IgV-like domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.59 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.174 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure and cancer immunotherapy of the B7 family member B7x.

Jeon, H.Vigdorovich, V.Garrett-Thomson, S.C.Janakiram, M.Ramagopal, U.A.Abadi, Y.M.Lee, J.S.Scandiuzzi, L.Ohaegbulam, K.C.Chinai, J.M.Zhao, R.Yao, Y.Mao, Y.Sparano, J.A.Almo, S.C.Zang, X.

(2014) Cell Rep 9: 1089-1098

  • DOI: 10.1016/j.celrep.2014.09.053

  • PubMed Abstract: 
  • B7x (B7-H4 or B7S1) is a member of the B7 family that can inhibit T cell function. B7x protein is absent in most normal human tissues and immune cells, but it is overexpressed in human cancers and often correlates with negative clinical outcome. The ...

    B7x (B7-H4 or B7S1) is a member of the B7 family that can inhibit T cell function. B7x protein is absent in most normal human tissues and immune cells, but it is overexpressed in human cancers and often correlates with negative clinical outcome. The expression pattern and function of B7x suggest that it may be a potent immunosuppressive pathway in human cancers. Here, we determined the crystal structure of the human B7x immunoglobulin variable (IgV) domain at 1.59 Å resolution and mapped the epitopes recognized by monoclonal antibodies. We developed an in vivo system to screen therapeutic monoclonal antibodies against B7x and found that the clone 1H3 significantly inhibited growth of B7x-expressing tumors in vivo via multiple mechanisms. Furthermore, the surviving mice given 1H3 treatment were resistant to tumor rechallenge. Our data suggest that targeting B7x on tumors is a promising cancer immunotherapy and humanized 1H3 may be efficacious for immunotherapy of human cancers.


    Organizational Affiliation

    Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
V-set domain-containing T-cell activation inhibitor 1
A
125Homo sapiensMutation(s): 0 
Gene Names: VTCN1 (B7H4)
Find proteins for Q7Z7D3 (Homo sapiens)
Go to Gene View: VTCN1
Go to UniProtKB:  Q7Z7D3
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MAN
Query on MAN

Download SDF File 
Download CCD File 
A
ALPHA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-PQMKYFCFSA-N
 Ligand Interaction
BMA
Query on BMA

Download SDF File 
Download CCD File 
A
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.59 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.174 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 46.500α = 90.00
b = 46.500β = 90.00
c = 115.770γ = 90.00
Software Package:
Software NamePurpose
SHELXDphasing
CBASSdata collection
SCALAdata scaling
REFMACrefinement
SHELXphasing
MOSFLMdata reduction
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2012-09-12
    Type: Initial release
  • Version 1.1: 2016-11-16
    Type: Database references