6NYP

Crystal structure of UL144/BTLA complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.230 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of human cytomegalovirus UL144, an HVEM orthologue, bound to the B and T cell lymphocyte attenuator.

Bitra, A.Nemcovicova, I.Picarda, G.Doukov, T.Wang, J.Benedict, C.A.Zajonc, D.M.

(2019) J.Biol.Chem. 294: 10519-10529

  • DOI: 10.1074/jbc.RA119.009199

  • PubMed Abstract: 
  • Human cytomegalovirus (HCMV) is a β-herpesvirus that has co-evolved with the host immune system to establish lifelong persistence. HCMV encodes many immune-modulatory molecules, including the glycoprotein UL144. UL144 is a structural mimic of the TNF ...

    Human cytomegalovirus (HCMV) is a β-herpesvirus that has co-evolved with the host immune system to establish lifelong persistence. HCMV encodes many immune-modulatory molecules, including the glycoprotein UL144. UL144 is a structural mimic of the TNFRSF member HVEM, which binds to various ligands LIGHT, LTα, BTLA, CD160 and gD. However, in contrast to HVEM, UL144 only binds BTLA, inhibiting T cell activation. Here we report the crystal structure of the UL144/BTLA complex, revealing that UL144 utilizes residues from its N-terminal cysteine rich domain 1 (CRD1) to interact uniquely with BTLA.  The shorter CRD2 loop of UL144 also alters the relative orientation of BTLA binding with both N-terminal CRDs. Employing structure-guided mutagenesis we have identified a mutant of BTLA (L123A) that interferes with HVEM binding, but preserves UL144 interactions. Furthermore, our results illuminate structural differences between UL144 and HVEM that explain its binding selectivity and highlight it as a suitable scaffold for designing superior, immune inhibitory BTLA agonists.


    Organizational Affiliation

    LJI.,La Jolla Institute for Immunology, United States.,LJI, United States.,SLAC, United States.,La Jolla Institute for Allergy and Immunology, United States.,Biomedical Research Center, Slovak Academy of Sciences, Slovakia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
B- and T-lymphocyte attenuator
A, B, C, D
107Homo sapiensMutation(s): 0 
Gene Names: BTLA
Find proteins for Q7Z6A9 (Homo sapiens)
Go to Gene View: BTLA
Go to UniProtKB:  Q7Z6A9
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
UL144
E, F, G, H
118N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A, D
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

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Download CCD File 
A, C, D, G
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

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Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
NAG
Query on NAG

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.230 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 66.990α = 90.00
b = 77.200β = 91.67
c = 101.720γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
BUCCANEERmodel building
XSCALEdata scaling
XDSdata reduction
PHASERphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2019-05-29
    Type: Initial release
  • Version 1.1: 2019-06-12
    Type: Data collection, Database references
  • Version 1.2: 2019-07-17
    Type: Data collection, Database references