8R7L | pdb_00008r7l

Cryo-EM structure of the human TREX complex

• PDB DOI: https://doi.org/10.2210/pdb8R7L/pdb
• EM Map EMD-18979: EMDB EMDataResource

• Classification: GENE REGULATION
• Organism(s): Homo sapiens
• Expression System: Escherichia coli, Trichoplusia ni
• Mutation(s): No 


• Deposited: 2023-11-25 Released: 2025-06-11 
• Deposition Author(s): Hohmann, U., Pacheco-Fiallos, B., Plaschka, C.
• Funding Organization(s): European Research Council (ERC), H2020 Marie Curie Actions of the European Commission, European Molecular Biology Organization (EMBO)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 4.12 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

A molecular switch orchestrates the export of human messenger RNA

Hohmann, U., Pacheco-Fiallos, B., Brennecke, J., Plaschka, C.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 5-mer - A1B1C1D1E1 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 365.95 kDa 
• Atom Count: 14,961 
• Modeled Residue Count: 1,879 
• Deposited Residue Count: 3,212 
• Unique protein chains: 5

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Spliceosome RNA helicase DDX39B	A [auth H]	428	Homo sapiens	Mutation(s): 0  Gene Names: DDX39B, BAT1, UAP56 EC: 3.6.4.13
UniProt & NIH Common Fund Data Resources
Find proteins for Q13838 (Homo sapiens) Explore Q13838  Go to UniProtKB:  Q13838
PHAROS:  Q13838 GTEx:  ENSG00000198563

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
THO complex subunit 1	B [auth A]	657	Homo sapiens	Mutation(s): 0  Gene Names: THOC1, HPR1
UniProt & NIH Common Fund Data Resources
Find proteins for Q96FV9 (Homo sapiens) Explore Q96FV9  Go to UniProtKB:  Q96FV9
PHAROS:  Q96FV9 GTEx:  ENSG00000079134

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
THO complex subunit 2	C [auth B]	1,593	Homo sapiens	Mutation(s): 0  Gene Names: THOC2, CXorf3
UniProt & NIH Common Fund Data Resources
Find proteins for Q8NI27 (Homo sapiens) Explore Q8NI27  Go to UniProtKB:  Q8NI27
PHAROS:  Q8NI27 GTEx:  ENSG00000125676

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
THO complex subunit 3	D [auth C]	351	Homo sapiens	Mutation(s): 0  Gene Names: THOC3
UniProt & NIH Common Fund Data Resources
Find proteins for Q96J01 (Homo sapiens) Explore Q96J01  Go to UniProtKB:  Q96J01
GTEx:  ENSG00000051596

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
THO complex subunit 4	E [auth D]	183	Homo sapiens	Mutation(s): 0  Gene Names: ALYREF, ALY, BEF, THOC4
UniProt & NIH Common Fund Data Resources
Find proteins for Q86V81 (Homo sapiens) Explore Q86V81  Go to UniProtKB:  Q86V81
PHAROS:  Q86V81

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 4.12 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.20.1_4487:

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-06-11 
Deposition Author(s): Hohmann, U., Pacheco-Fiallos, B., Plaschka, C.

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Funding Organization	Location	Grant Number
European Research Council (ERC)	European Union	949081
H2020 Marie Curie Actions of the European Commission	European Union	896416
European Molecular Biology Organization (EMBO)	European Union	ALTF_1175-2019

Revision History  

• Version 1.0: 2025-06-11
  Type: Initial release