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- PDB-8r7k: Cryo-EM structure of the human UAP56 - TREX-2 complex -

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Basic information

Entry
Database: PDB / ID: 8r7k
TitleCryo-EM structure of the human UAP56 - TREX-2 complex
Components
  • 26S proteasome complex subunit SEM1
  • Germinal-center associated nuclear protein
  • PCI domain-containing protein 2
  • Spliceosome RNA helicase DDX39B
KeywordsGENE REGULATION / mRNA export / nuclear pore basket
Function / homology
Function and homology information


negative regulation of lymphoid progenitor cell differentiation / negative regulation of transcription initiation by RNA polymerase II / transcription export complex / positive regulation of mitotic cell cycle spindle assembly checkpoint / heterochromatin organization / U6 snRNP / transcription export complex 2 / post-transcriptional tethering of RNA polymerase II gene DNA at nuclear periphery / Impaired BRCA2 translocation to the nucleus / Impaired BRCA2 binding to SEM1 (DSS1) ...negative regulation of lymphoid progenitor cell differentiation / negative regulation of transcription initiation by RNA polymerase II / transcription export complex / positive regulation of mitotic cell cycle spindle assembly checkpoint / heterochromatin organization / U6 snRNP / transcription export complex 2 / post-transcriptional tethering of RNA polymerase II gene DNA at nuclear periphery / Impaired BRCA2 translocation to the nucleus / Impaired BRCA2 binding to SEM1 (DSS1) / nuclear pore nuclear basket / histone H3 acetyltransferase activity / integrator complex / nucleosome organization / ATP-dependent protein binding / mRNA 3'-end processing / ATP-dependent activity, acting on RNA / U4 snRNA binding / proteasome regulatory particle, lid subcomplex / Transport of Mature mRNA derived from an Intron-Containing Transcript / RNA export from nucleus / U4 snRNP / Regulation of ornithine decarboxylase (ODC) / RNA Polymerase II Transcription Termination / Proteasome assembly / Homologous DNA Pairing and Strand Exchange / Defective homologous recombination repair (HRR) due to BRCA1 loss of function / Defective HDR through Homologous Recombination Repair (HRR) due to PALB2 loss of BRCA1 binding function / Defective HDR through Homologous Recombination Repair (HRR) due to PALB2 loss of BRCA2/RAD51/RAD51C binding function / Cross-presentation of soluble exogenous antigens (endosomes) / Resolution of D-loop Structures through Synthesis-Dependent Strand Annealing (SDSA) / Resolution of D-loop Structures through Holliday Junction Intermediates / positive regulation of B cell differentiation / Somitogenesis / poly(A)+ mRNA export from nucleus / Impaired BRCA2 binding to RAD51 / negative regulation of gene expression, epigenetic / histone acetyltransferase activity / spliceosomal complex assembly / Presynaptic phase of homologous DNA pairing and strand exchange / somatic hypermutation of immunoglobulin genes / proteasome assembly / U6 snRNA binding / mRNA export from nucleus / RHOBTB2 GTPase cycle / histone H4K16 acetyltransferase activity / histone H3K56 acetyltransferase activity / histone H3K23 acetyltransferase activity / histone H2AK5 acetyltransferase activity / histone H2AK9 acetyltransferase activity / histone H2BK5 acetyltransferase activity / histone H2BK12 acetyltransferase activity / histone H3K4 acetyltransferase activity / histone H3K27 acetyltransferase activity / histone H3K36 acetyltransferase activity / histone H3K122 acetyltransferase activity / histone H3K18 acetyltransferase activity / histone H3K9 acetyltransferase activity / histone H3K14 acetyltransferase activity / histone H4K5 acetyltransferase activity / histone H4K8 acetyltransferase activity / histone H4K12 acetyltransferase activity / histone acetyltransferase / spleen development / Transferases; Acyltransferases; Transferring groups other than aminoacyl groups / mRNA Splicing - Major Pathway / proteasome complex / RNA splicing / Regulation of activated PAK-2p34 by proteasome mediated degradation / Autodegradation of Cdh1 by Cdh1:APC/C / APC/C:Cdc20 mediated degradation of Securin / Asymmetric localization of PCP proteins / Ubiquitin-dependent degradation of Cyclin D / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / TNFR2 non-canonical NF-kB pathway / AUF1 (hnRNP D0) binds and destabilizes mRNA / Vpu mediated degradation of CD4 / Assembly of the pre-replicative complex / Ubiquitin Mediated Degradation of Phosphorylated Cdc25A / Degradation of DVL / spliceosomal complex / transcription elongation by RNA polymerase II / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / Dectin-1 mediated noncanonical NF-kB signaling / Degradation of AXIN / Hh mutants are degraded by ERAD / Activation of NF-kappaB in B cells / Degradation of GLI1 by the proteasome / Hedgehog ligand biogenesis / G2/M Checkpoints / Defective CFTR causes cystic fibrosis / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Autodegradation of the E3 ubiquitin ligase COP1 / Negative regulation of NOTCH4 signaling / Vif-mediated degradation of APOBEC3G / Regulation of RUNX3 expression and activity / Hedgehog 'on' state / double-strand break repair via homologous recombination / Degradation of GLI2 by the proteasome
Similarity search - Function
Germinal-centre associated nuclear protein, MCM3AP domain / Germinal-centre associated nuclear protein, nucleoporin homology domain / Germinal-centre associated nuclear protein, CID domain / MCM3AP, RNA recognition motif / Binding region of GANP to ENY2 / Nucleoporin homology of Germinal-centre associated nuclear protein / MCM3AP domain of GANP / Csn12 family / SAC3/GANP/THP3, conserved domain / SAC3/GANP/THP3 ...Germinal-centre associated nuclear protein, MCM3AP domain / Germinal-centre associated nuclear protein, nucleoporin homology domain / Germinal-centre associated nuclear protein, CID domain / MCM3AP, RNA recognition motif / Binding region of GANP to ENY2 / Nucleoporin homology of Germinal-centre associated nuclear protein / MCM3AP domain of GANP / Csn12 family / SAC3/GANP/THP3, conserved domain / SAC3/GANP/THP3 / SAC3/GANP family / DSS1/SEM1 / DSS1/SEM1 family / DSS1_SEM1 / PCI/PINT associated module / PCI domain / Proteasome component (PCI) domain / PCI domain profile. / RNA helicase, DEAD-box type, Q motif / DEAD-box RNA helicase Q motif profile. / DEAD/DEAH box helicase domain / DEAD/DEAH box helicase / RNA-binding domain superfamily / Helicase conserved C-terminal domain / helicase superfamily c-terminal domain / Superfamilies 1 and 2 helicase C-terminal domain profile. / Superfamilies 1 and 2 helicase ATP-binding type-1 domain profile. / DEAD-like helicases superfamily / Helicase, C-terminal / Helicase superfamily 1/2, ATP-binding domain / Winged helix-like DNA-binding domain superfamily / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER / Germinal-center associated nuclear protein / 26S proteasome complex subunit SEM1 / Spliceosome RNA helicase DDX39B / PCI domain-containing protein 2
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.5 Å
AuthorsHohmann, U. / Graf, M. / Plaschka, C.
Funding supportEuropean Union, 3items
OrganizationGrant numberCountry
European Research Council (ERC)949081European Union
H2020 Marie Curie Actions of the European Commission896416European Union
European Molecular Biology Organization (EMBO)ALTF_1175-2019European Union
CitationJournal: To Be Published
Title: A molecular switch orchestrates the export of human messenger RNA
Authors: Hohmann, U. / Graf, M. / Brennecke, J. / Plaschka, C.
History
DepositionNov 25, 2023Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jun 11, 2025Provider: repository / Type: Initial release
Revision 1.0Jun 11, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Jun 11, 2025Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Jun 11, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Jun 11, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Jun 11, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Jun 11, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Germinal-center associated nuclear protein
B: PCI domain-containing protein 2
C: 26S proteasome complex subunit SEM1
H: Spliceosome RNA helicase DDX39B
hetero molecules


Theoretical massNumber of molelcules
Total (without water)152,1045
Polymers151,5984
Non-polymers5061
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area12510 Å2
ΔGint-56 kcal/mol
Surface area47710 Å2
MethodPISA

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Components

#1: Protein Germinal-center associated nuclear protein / GANP / 80 kDa MCM3-associated protein / MCM3 acetylating protein / MCM3AP / MCM3 acetyltransferase


Mass: 48160.965 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: MCM3AP, GANP, KIAA0572, MAP80 / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / Variant (production host): RIL
References: UniProt: O60318, histone acetyltransferase, Transferases; Acyltransferases; Transferring groups other than aminoacyl groups
#2: Protein PCI domain-containing protein 2 / CSN12-like protein


Mass: 46095.883 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PCID2, HT004 / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / Variant (production host): RIL / References: UniProt: Q5JVF3
#3: Protein 26S proteasome complex subunit SEM1 / 26S proteasome complex subunit DSS1 / Deleted in split hand/split foot protein 1 / Split hand/foot ...26S proteasome complex subunit DSS1 / Deleted in split hand/split foot protein 1 / Split hand/foot deleted protein 1 / Split hand/foot malformation type 1 protein


Mass: 8284.611 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SEM1, C7orf76, DSS1, SHFDG1, SHFM1 / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / Variant (production host): RIL / References: UniProt: P60896
#4: Protein Spliceosome RNA helicase DDX39B / 56 kDa U2AF65-associated protein / ATP-dependent RNA helicase p47 / DEAD box protein UAP56 / HLA-B- ...56 kDa U2AF65-associated protein / ATP-dependent RNA helicase p47 / DEAD box protein UAP56 / HLA-B-associated transcript 1 protein


Mass: 49056.250 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: DDX39B, BAT1, UAP56 / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / Variant (production host): RIL / References: UniProt: Q13838, RNA helicase
#5: Chemical ChemComp-ANP / PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER


Mass: 506.196 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H17N6O12P3 / Feature type: SUBJECT OF INVESTIGATION / Comment: AMP-PNP, energy-carrying molecule analogue*YM
Has ligand of interestY
Has protein modificationN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

Component
IDNameTypeEntity IDParent-IDSource
1Human UAP56 - TREX-2 complexCOMPLEX#1-#40RECOMBINANT
2Human TREX-2 complex middle domainCOMPLEX#1-#31RECOMBINANT
Molecular weight
IDEntity assembly-IDUnitsExperimental value
11KILODALTONS/NANOMETERNO
22
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
21Homo sapiens (human)9606
32Homo sapiens (human)9606
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
21Escherichia coli BL21(DE3) (bacteria)469008
32Escherichia coli BL21(DE3) (bacteria)469008
Buffer solutionpH: 7.9
SpecimenConc.: 0.7 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: LEICA EM GP / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 281 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm
Specimen holderCryogen: NITROGEN
Image recordingElectron dose: 50 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)

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Processing

EM softwareName: PHENIX / Version: 1.20.1_4487: / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 57499 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0088145
ELECTRON MICROSCOPYf_angle_d1.52611015
ELECTRON MICROSCOPYf_dihedral_angle_d9.5371097
ELECTRON MICROSCOPYf_chiral_restr0.0791241
ELECTRON MICROSCOPYf_plane_restr0.0131412

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