7ZNL

Structure of the human TREX core THO-UAP56 complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.45 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

mRNA recognition and packaging by the human transcription-export complex.

Pacheco-Fiallos, B.Vorlander, M.K.Riabov-Bassat, D.Fin, L.O'Reilly, F.J.Ayala, F.I.Schellhaas, U.Rappsilber, J.Plaschka, C.

(2023) Nature 616: 828-835

  • DOI: https://doi.org/10.1038/s41586-023-05904-0
  • Primary Citation of Related Structures:  
    7ZNJ, 7ZNK, 7ZNL

  • PubMed Abstract: 

    Newly made mRNAs are processed and packaged into mature ribonucleoprotein complexes (mRNPs) and are recognized by the essential transcription-export complex (TREX) for nuclear export 1,2 . However, the mechanisms of mRNP recognition and three-dimensional mRNP organization are poorly understood 3 . Here we report cryo-electron microscopy and tomography structures of reconstituted and endogenous human mRNPs bound to the 2-MDa TREX complex. We show that mRNPs are recognized through multivalent interactions between the TREX subunit ALYREF and mRNP-bound exon junction complexes. Exon junction complexes can multimerize through ALYREF, which suggests a mechanism for mRNP organization. Endogenous mRNPs form compact globules that are coated by multiple TREX complexes. These results reveal how TREX may simultaneously recognize, compact and protect mRNAs to promote their packaging for nuclear export. The organization of mRNP globules provides a framework to understand how mRNP architecture facilitates mRNA biogenesis and export.


  • Organizational Affiliation

    Research Institute of Molecular Pathology (IMP), Vienna BioCenter (VBC), Vienna, Austria.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
THO complex subunit 1A,
H [auth I],
O [auth a],
V [auth i]
657Homo sapiensMutation(s): 0 
Gene Names: THOC1HPR1
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Find proteins for Q96FV9 (Homo sapiens)
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Go to UniProtKB:  Q96FV9
PHAROS:  Q96FV9
GTEx:  ENSG00000079134 
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UniProt GroupQ96FV9
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
THO complex subunit 2B,
I [auth J],
P [auth b],
W [auth j]
1,593Homo sapiensMutation(s): 0 
Gene Names: THOC2CXorf3
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Find proteins for Q8NI27 (Homo sapiens)
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PHAROS:  Q8NI27
GTEx:  ENSG00000125676 
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UniProt GroupQ8NI27
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
THO complex subunit 3C,
J [auth K],
Q [auth c],
X [auth k]
351Homo sapiensMutation(s): 0 
Gene Names: THOC3
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Find proteins for Q96J01 (Homo sapiens)
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GTEx:  ENSG00000051596 
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
THO complex subunit 5 homologD [auth E],
K [auth M],
R [auth e],
Y [auth m]
683Homo sapiensMutation(s): 0 
Gene Names: THOC5C22orf19KIAA0983
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GTEx:  ENSG00000100296 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
THO complex subunit 6 homologE [auth F],
L [auth N],
S [auth f],
Z [auth n]
341Homo sapiensMutation(s): 0 
Gene Names: THOC6WDR58PSEC0006
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Find proteins for Q86W42 (Homo sapiens)
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GTEx:  ENSG00000131652 
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
THO complex subunit 7 homologAA [auth o],
F [auth G],
M [auth O],
T [auth g]
204Homo sapiensMutation(s): 0 
Gene Names: THOC7NIF3L1BP1
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GTEx:  ENSG00000163634 
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
Spliceosome RNA helicase DDX39BBA [auth p],
G [auth H],
N [auth P],
U [auth h]
428Homo sapiensMutation(s): 0 
Gene Names: DDX39BBAT1UAP56
EC: 3.6.4.13
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Find proteins for Q13838 (Homo sapiens)
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GTEx:  ENSG00000198563 
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.45 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European Research Council (ERC)European Union949081
European Molecular Biology Organization (EMBO)European Union623-2020

Revision History  (Full details and data files)

  • Version 1.0: 2023-05-17
    Type: Initial release
  • Version 1.1: 2023-05-24
    Changes: Database references
  • Version 1.2: 2024-07-24
    Changes: Data collection