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- PDB-9qhi: Structure of UBA6-UbDha-BIRC6 trapped ternary complex (cluster 0) -

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Basic information

Entry
Database: PDB / ID: 9qhi
TitleStructure of UBA6-UbDha-BIRC6 trapped ternary complex (cluster 0)
Components
  • Dual E2 ubiquitin-conjugating enzyme/E3 ubiquitin-protein ligase BIRC6
  • Polyubiquitin-B
  • Ubiquitin-like modifier-activating enzyme 6
KeywordsLIGASE / Ubiquitin / E1 / E2 / SIGNALING PROTEIN
Function / homology
Function and homology information


FAT10 activating enzyme activity / E1 ubiquitin-activating enzyme / ubiquitin activating enzyme activity / labyrinthine layer development / (E3-independent) E2 ubiquitin-conjugating enzyme / ALK mutants bind TKIs / Flemming body / hypothalamus gonadotrophin-releasing hormone neuron development / female meiosis I / positive regulation of protein monoubiquitination ...FAT10 activating enzyme activity / E1 ubiquitin-activating enzyme / ubiquitin activating enzyme activity / labyrinthine layer development / (E3-independent) E2 ubiquitin-conjugating enzyme / ALK mutants bind TKIs / Flemming body / hypothalamus gonadotrophin-releasing hormone neuron development / female meiosis I / positive regulation of protein monoubiquitination / fat pad development / mitochondrion transport along microtubule / female gonad development / seminiferous tubule development / male meiosis I / ubiquitin conjugating enzyme activity / microtubule organizing center / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / cysteine-type endopeptidase inhibitor activity / energy homeostasis / regulation of neuron apoptotic process / neuron projection morphogenesis / regulation of proteasomal protein catabolic process / Maturation of protein E / Maturation of protein E / ER Quality Control Compartment (ERQC) / Myoclonic epilepsy of Lafora / FLT3 signaling by CBL mutants / Prevention of phagosomal-lysosomal fusion / IRAK2 mediated activation of TAK1 complex / Alpha-protein kinase 1 signaling pathway / Glycogen synthesis / IRAK1 recruits IKK complex / IRAK1 recruits IKK complex upon TLR7/8 or 9 stimulation / Endosomal Sorting Complex Required For Transport (ESCRT) / Membrane binding and targetting of GAG proteins / Negative regulation of FLT3 / Regulation of TBK1, IKKε (IKBKE)-mediated activation of IRF3, IRF7 / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / Regulation of TBK1, IKKε-mediated activation of IRF3, IRF7 upon TLR3 ligation / Constitutive Signaling by NOTCH1 HD Domain Mutants / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / NOTCH2 Activation and Transmission of Signal to the Nucleus / TICAM1,TRAF6-dependent induction of TAK1 complex / TICAM1-dependent activation of IRF3/IRF7 / APC/C:Cdc20 mediated degradation of Cyclin B / Downregulation of ERBB4 signaling / Regulation of FZD by ubiquitination / APC-Cdc20 mediated degradation of Nek2A / p75NTR recruits signalling complexes / InlA-mediated entry of Listeria monocytogenes into host cells / TRAF6 mediated IRF7 activation in TLR7/8 or 9 signaling / TRAF6-mediated induction of TAK1 complex within TLR4 complex / Regulation of pyruvate metabolism / NF-kB is activated and signals survival / Regulation of innate immune responses to cytosolic DNA / Downregulation of ERBB2:ERBB3 signaling / Pexophagy / NRIF signals cell death from the nucleus / VLDLR internalisation and degradation / Regulation of PTEN localization / Activated NOTCH1 Transmits Signal to the Nucleus / Regulation of BACH1 activity / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / MAP3K8 (TPL2)-dependent MAPK1/3 activation / TICAM1, RIP1-mediated IKK complex recruitment / Translesion synthesis by REV1 / InlB-mediated entry of Listeria monocytogenes into host cell / Translesion synthesis by POLK / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / Downregulation of TGF-beta receptor signaling / JNK (c-Jun kinases) phosphorylation and activation mediated by activated human TAK1 / Josephin domain DUBs / Translesion synthesis by POLI / IKK complex recruitment mediated by RIP1 / Regulation of activated PAK-2p34 by proteasome mediated degradation / Gap-filling DNA repair synthesis and ligation in GG-NER / positive regulation of protein ubiquitination / PINK1-PRKN Mediated Mitophagy / TGF-beta receptor signaling in EMT (epithelial to mesenchymal transition) / TNFR1-induced NF-kappa-B signaling pathway / regulation of cytokinesis / Autodegradation of Cdh1 by Cdh1:APC/C / regulation of mitochondrial membrane potential / APC/C:Cdc20 mediated degradation of Securin / TCF dependent signaling in response to WNT / negative regulation of extrinsic apoptotic signaling pathway / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / Regulation of NF-kappa B signaling / Asymmetric localization of PCP proteins / activated TAK1 mediates p38 MAPK activation / 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 / Regulation of signaling by CBL / Negative regulators of DDX58/IFIH1 signaling / Vpu mediated degradation of CD4 / NOTCH3 Activation and Transmission of Signal to the Nucleus
Similarity search - Function
Baculoviral IAP repeat-containing protein 6 / Baculoviral IAP repeat-containing protein 6 / Ubiquitin-activating enzyme E1 / Ubiquitin-activating enzyme E1, C-terminal / Ubiquitin-activating enzyme E1, FCCH domain / Ubiquitin-activating enzyme E1, four-helix bundle / Ubiquitin-activating enzyme E1, C-terminal domain superfamily / Ubiquitin-activating enzyme E1, SCCH domain / Ubiquitin-activating enzyme E1, FCCH domain superfamily / Ubiquitin fold domain ...Baculoviral IAP repeat-containing protein 6 / Baculoviral IAP repeat-containing protein 6 / Ubiquitin-activating enzyme E1 / Ubiquitin-activating enzyme E1, C-terminal / Ubiquitin-activating enzyme E1, FCCH domain / Ubiquitin-activating enzyme E1, four-helix bundle / Ubiquitin-activating enzyme E1, C-terminal domain superfamily / Ubiquitin-activating enzyme E1, SCCH domain / Ubiquitin-activating enzyme E1, FCCH domain superfamily / Ubiquitin fold domain / Ubiquitin-activating enzyme E1 FCCH domain / Ubiquitin-activating enzyme E1 four-helix bundle / Ubiquitin-activating enzyme e1 C-terminal domain / Ubiquitin-activating enzyme, SCCH domain / Ubiquitin-activating enzyme, SCCH domain / Ubiquitin/SUMO-activating enzyme E1-like / Ubiquitin-activating enzyme E1, inactive adenylation domain, subdomain 1 / ThiF/MoeB/HesA family / THIF-type NAD/FAD binding fold / ThiF family / Ubiquitin-activating enzyme / BIR repeat / Inhibitor of Apoptosis domain / BIR repeat profile. / Baculoviral inhibition of apoptosis protein repeat / Ubiquitin-conjugating enzyme E2 / Ubiquitin-conjugating enzyme / Ubiquitin-conjugating (UBC) core domain profile. / Ubiquitin-conjugating enzyme E2, catalytic domain homologues / Ubiquitin-conjugating enzyme/RWD-like / : / Ubiquitin domain signature. / Ubiquitin conserved site / Ubiquitin domain / Ubiquitin family / Ubiquitin homologues / Ubiquitin domain profile. / Ubiquitin-like domain / Ubiquitin-like domain superfamily
Similarity search - Domain/homology
ADENOSINE MONOPHOSPHATE / INOSITOL HEXAKISPHOSPHATE / Ubiquitin-like modifier-activating enzyme 6 / Polyubiquitin-B / Dual E2 ubiquitin-conjugating enzyme/E3 ubiquitin-protein ligase BIRC6
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.27 Å
AuthorsRiechmann, C. / Elliott, P.R.
Funding support United Kingdom, 2items
OrganizationGrant numberCountry
UK Research and Innovation (UKRI)BB/Y008936/1 United Kingdom
Cancer Research UKDRCPFA-Jun24/100003 United Kingdom
CitationJournal: To Be Published
Title: Molecular basis of UBA6 specificity for ubiquitin E2 conjugating enzymes reveals a priority mechanism of BIRC6
Authors: Riechmann, C. / Ellison, C.J. / Anderson, J.W. / Hofmann, K. / Sarkies, P. / Elliott, P.R.
History
DepositionMar 15, 2025Deposition site: PDBE / Processing site: PDBE
Revision 1.0Oct 29, 2025Provider: repository / Type: Initial release
Revision 1.0Oct 29, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Oct 29, 2025Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Oct 29, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Oct 29, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Oct 29, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Oct 29, 2025Data content type: Mask / Part number: 1 / Data content type: Mask / Provider: repository / Type: Initial release
Revision 1.0Oct 29, 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: Dual E2 ubiquitin-conjugating enzyme/E3 ubiquitin-protein ligase BIRC6
B: Ubiquitin-like modifier-activating enzyme 6
C: Polyubiquitin-B
E: Polyubiquitin-B
hetero molecules


Theoretical massNumber of molelcules
Total (without water)173,2746
Polymers172,2674
Non-polymers1,0072
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein Dual E2 ubiquitin-conjugating enzyme/E3 ubiquitin-protein ligase BIRC6 / BIR repeat-containing ubiquitin-conjugating enzyme / BRUCE / Baculoviral IAP repeat-containing ...BIR repeat-containing ubiquitin-conjugating enzyme / BRUCE / Baculoviral IAP repeat-containing protein 6 / Ubiquitin-conjugating BIR domain enzyme apollon / APOLLON


Mass: 36834.668 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: BIRC6, KIAA1289 / Production host: Escherichia coli BL21(DE3) (bacteria) / Variant (production host): Rosetta
References: UniProt: Q9NR09, (E3-independent) E2 ubiquitin-conjugating enzyme
#2: Protein Ubiquitin-like modifier-activating enzyme 6 / Ubiquitin-activating enzyme 6 / Monocyte protein 4 / MOP-4 / Ubiquitin-activating enzyme E1-like ...Ubiquitin-activating enzyme 6 / Monocyte protein 4 / MOP-4 / Ubiquitin-activating enzyme E1-like protein 2 / E1-L2


Mass: 118250.820 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: UBA6, MOP4, UBE1L2 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: A0AVT1, E1 ubiquitin-activating enzyme
#3: Protein Polyubiquitin-B


Mass: 8590.856 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: UBB / Production host: Escherichia coli BL21(DE3) (bacteria) / Variant (production host): Rosetta / References: UniProt: P0CG47
#4: Chemical ChemComp-IHP / INOSITOL HEXAKISPHOSPHATE / MYO-INOSITOL HEXAKISPHOSPHATE / INOSITOL 1,2,3,4,5,6-HEXAKISPHOSPHATE


Mass: 660.035 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C6H18O24P6
#5: Chemical ChemComp-AMP / ADENOSINE MONOPHOSPHATE


Mass: 347.221 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H14N5O7P / Comment: AMP*YM
Has ligand of interestN
Has protein modificationY

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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

ComponentName: Trapped ternary complex of BIRC6 with UBA6 / Type: COMPLEX / Entity ID: #1-#3 / Source: RECOMBINANT
Molecular weightValue: 0.17 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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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: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 500 nm
Image recordingElectron dose: 37.84 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 4.27 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 13888 / Symmetry type: POINT

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