5U1D

Cryo-EM structure of the human TAP ATP-Binding Cassette Transporter


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.97 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of the transporter associated with antigen processing trapped by herpes simplex virus.

Oldham, M.L.Grigorieff, N.Chen, J.

(2016) Elife 5

  • DOI: 10.7554/eLife.21829
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The transporter associated with antigen processing (TAP) is an ATP-binding cassette (ABC) transporter essential to cellular immunity against viral infection. Some persistent viruses have evolved strategies to inhibit TAP so that they may go undetecte ...

    The transporter associated with antigen processing (TAP) is an ATP-binding cassette (ABC) transporter essential to cellular immunity against viral infection. Some persistent viruses have evolved strategies to inhibit TAP so that they may go undetected by the immune system. The herpes simplex virus for example evades immune surveillance by blocking peptide transport with a small viral protein ICP47. In this study, we determined the structure of human TAP bound to ICP47 by electron cryo-microscopy (cryo-EM) to 4.0 Å. The structure shows that ICP47 traps TAP in an inactive conformation distinct from the normal transport cycle. The specificity and potency of ICP47 inhibition result from contacts between the tip of the helical hairpin and the apex of the transmembrane cavity. This work provides a clear molecular description of immune evasion by a persistent virus. It also establishes the molecular structure of TAP to facilitate mechanistic studies of the antigen presentation process.


    Organizational Affiliation

    Howard Hughes Medical Institute, The Rockefeller University, New York, United States.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Antigen peptide transporter 2B686Homo sapiensMutation(s): 0 
Gene Names: TAP2ABCB3PSF2RING11Y1
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
ATP Binding Cassette (ABC) Transporters
Protein: 
Transporter associated with antigen processing (TAP) bound to ICP47
Find proteins for Q03519 (Homo sapiens)
Explore Q03519 
Go to UniProtKB:  Q03519
NIH Common Fund Data Resources
PHAROS  Q03519
Protein Feature View
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  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
TAP transporter inhibitor ICP47X88Human alphaherpesvirus 1Mutation(s): 0 
Gene Names: US12
Find proteins for A0A140GKJ0 (Human herpesvirus 1)
Explore A0A140GKJ0 
Go to UniProtKB:  A0A140GKJ0
Protein Feature View
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  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Antigen peptide transporter 1A748Homo sapiensMutation(s): 0 
Gene Names: TAP1ABCB2PSF1RING4Y3
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
ATP Binding Cassette (ABC) Transporters
Protein: 
Transporter associated with antigen processing (TAP) bound to ICP47
Find proteins for Q03518 (Homo sapiens)
Explore Q03518 
Go to UniProtKB:  Q03518
NIH Common Fund Data Resources
PHAROS  Q03518
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.97 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Howard Hughes Medical Institute (HHMI)United States--

Revision History 

  • Version 1.0: 2017-01-11
    Type: Initial release
  • Version 1.1: 2018-07-18
    Changes: Data collection, Experimental preparation
  • Version 1.2: 2019-11-20
    Changes: Author supporting evidence