6J0G

Crystal structure of intracellular B30.2 domain of BTN3A3 mutant in complex with HMBPP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.245 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A Structural Change in Butyrophilin upon Phosphoantigen Binding Underlies Phosphoantigen-Mediated V gamma 9V delta 2 T Cell Activation.

Yang, Y.Li, L.Yuan, L.Zhou, X.Duan, J.Xiao, H.Cai, N.Han, S.Ma, X.Liu, W.Chen, C.C.Wang, L.Li, X.Chen, J.Kang, N.Chen, J.Shen, Z.Malwal, S.R.Liu, W.Shi, Y.Oldfield, E.Guo, R.T.Zhang, Y.

(2019) Immunity 50: 1043

  • DOI: 10.1016/j.immuni.2019.02.016
  • Primary Citation of Related Structures:  
    6J06, 6J0L, 6J0G, 6J0K, 5ZXK, 5ZZ3, 6ISM, 6ITA

  • PubMed Abstract: 
  • Human Vγ9Vδ2 T cells respond to microbial infections and malignancy by sensing diphosphate-containing metabolites called phosphoantigens, which bind to the intracellular domain of butyrophilin 3A1, triggering extracellular interactions with the Vγ9Vδ ...

    Human Vγ9Vδ2 T cells respond to microbial infections and malignancy by sensing diphosphate-containing metabolites called phosphoantigens, which bind to the intracellular domain of butyrophilin 3A1, triggering extracellular interactions with the Vγ9Vδ2 T cell receptor (TCR). Here, we examined the molecular basis of this "inside-out" triggering mechanism. Crystal structures of intracellular butyrophilin 3A proteins alone or in complex with the potent microbial phosphoantigen HMBPP or a synthetic analog revealed key features of phosphoantigens and butyrophilins required for γδ T cell activation. Analyses with chemical probes and molecular dynamic simulations demonstrated that dimerized intracellular proteins cooperate in sensing HMBPP to enhance the efficiency of γδ T cell activation. HMBPP binding to butyrophilin doubled the binding force between a γδ T cell and a target cell during "outside" signaling, as measured by single-cell force microscopy. Our findings provide insight into the "inside-out" triggering of Vγ9Vδ2 T cell activation by phosphoantigen-bound butyrophilin, facilitating immunotherapeutic drug design.


    Organizational Affiliation

    School of Pharmaceutical Sciences, Beijing Advanced Innovation Center for Structural Biology, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China. Electronic address: zhangyonghui@tsinghua.edu.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Butyrophilin subfamily 3 member A3A, B, C, D221Homo sapiensMutation(s): 1 
Gene Names: BTN3A3BTF3
Find proteins for O00478 (Homo sapiens)
Explore O00478 
Go to UniProtKB:  O00478
NIH Common Fund Data Resources
PHAROS  O00478
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
H6P
Query on H6P

Download CCD File 
A, B, C, D
(2E)-4-hydroxy-3-methylbut-2-en-1-yl trihydrogen diphosphate
C5 H12 O8 P2
MDSIZRKJVDMQOQ-GORDUTHDSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
H6PKd:  2300   nM  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.245 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 39.109α = 85.78
b = 67.108β = 86.88
c = 75.436γ = 86.9
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2019-04-03
    Type: Initial release
  • Version 1.1: 2019-04-10
    Changes: Data collection, Database references
  • Version 1.2: 2019-05-01
    Changes: Data collection, Database references