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- PDB-9d8p: Focused map of Cryo-EM structure of Ubiquitin C-degron bound to K... -

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Basic information

Entry
Database: PDB / ID: 9d8p
TitleFocused map of Cryo-EM structure of Ubiquitin C-degron bound to KLHDC10-EloB/C
Components
  • Elongin-B
  • Elongin-C
  • Kelch domain-containing protein 10
  • Ubiquitin-C
KeywordsLIGASE / KLHDC10 / ubiquitin / E3 / Cullin-RING / C-Degron
Function / homology
Function and homology information


positive regulation of stress-activated MAPK cascade / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / target-directed miRNA degradation / VCB complex / elongin complex / Cul5-RING ubiquitin ligase complex / Cul2-RING ubiquitin ligase complex / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / HIV elongation arrest and recovery ...positive regulation of stress-activated MAPK cascade / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / target-directed miRNA degradation / VCB complex / elongin complex / Cul5-RING ubiquitin ligase complex / Cul2-RING ubiquitin ligase complex / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / Tat-mediated elongation of the HIV-1 transcript / ubiquitin-like ligase-substrate adaptor activity / Formation of HIV-1 elongation complex containing HIV-1 Tat / Formation of HIV elongation complex in the absence of HIV Tat / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / Maturation of protein E / Maturation of protein E / RNA Polymerase II Pre-transcription Events / ER Quality Control Compartment (ERQC) / rescue of stalled ribosome / 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 / Membrane binding and targetting of GAG proteins / Endosomal Sorting Complex Required For Transport (ESCRT) / Regulation of TBK1, IKKε (IKBKE)-mediated activation of IRF3, IRF7 / Negative regulation of FLT3 / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / Constitutive Signaling by NOTCH1 HD Domain Mutants / Regulation of TBK1, IKKε-mediated activation of IRF3, IRF7 upon TLR3 ligation / 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 / Regulation of FZD by ubiquitination / Downregulation of ERBB4 signaling / p75NTR recruits signalling complexes / APC-Cdc20 mediated degradation of Nek2A / 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 / Regulation of innate immune responses to cytosolic DNA / NF-kB is activated and signals survival / Downregulation of ERBB2:ERBB3 signaling / Pexophagy / NRIF signals cell death from the nucleus / Regulation of PTEN localization / VLDLR internalisation and degradation / Activated NOTCH1 Transmits Signal to the Nucleus / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / Regulation of BACH1 activity / MAP3K8 (TPL2)-dependent MAPK1/3 activation / TICAM1, RIP1-mediated IKK complex recruitment / Translesion synthesis by REV1 / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / Translesion synthesis by POLK / InlB-mediated entry of Listeria monocytogenes into host cell / Downregulation of TGF-beta receptor signaling / Josephin domain DUBs / JNK (c-Jun kinases) phosphorylation and activation mediated by activated human TAK1 / Regulation of activated PAK-2p34 by proteasome mediated degradation / Translesion synthesis by POLI / IKK complex recruitment mediated by RIP1 / Gap-filling DNA repair synthesis and ligation in GG-NER / transcription corepressor binding / PINK1-PRKN Mediated Mitophagy / TGF-beta receptor signaling in EMT (epithelial to mesenchymal transition) / TNFR1-induced NF-kappa-B signaling pathway / Autodegradation of Cdh1 by Cdh1:APC/C / APC/C:Cdc20 mediated degradation of Securin / TCF dependent signaling in response to WNT / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / Regulation of NF-kappa B signaling / Asymmetric localization of PCP proteins / Ubiquitin-dependent degradation of Cyclin D / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / activated TAK1 mediates p38 MAPK activation / Negative regulators of DDX58/IFIH1 signaling / TNFR2 non-canonical NF-kB pathway / AUF1 (hnRNP D0) binds and destabilizes mRNA / TP53 Regulates Transcription of DNA Repair Genes / transcription initiation at RNA polymerase II promoter / Regulation of signaling by CBL / NOTCH3 Activation and Transmission of Signal to the Nucleus / Vpu mediated degradation of CD4 / Assembly of the pre-replicative complex / Ubiquitin Mediated Degradation of Phosphorylated Cdc25A / Degradation of DVL / Deactivation of the beta-catenin transactivating complex / Negative regulation of FGFR3 signaling
Similarity search - Function
: / Kelch motif / Host cell factor, Kelch-repeats domain / Galactose oxidase, central domain / Kelch / Kelch repeat type 1 / Elongin-C / Elongin B / Kelch-type beta propeller / S-phase kinase-associated protein 1-like ...: / Kelch motif / Host cell factor, Kelch-repeats domain / Galactose oxidase, central domain / Kelch / Kelch repeat type 1 / Elongin-C / Elongin B / Kelch-type beta propeller / S-phase kinase-associated protein 1-like / SKP1 component, POZ domain / Skp1 family, tetramerisation domain / Found in Skp1 protein family / SKP1/BTB/POZ domain superfamily / : / 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
Polyubiquitin-C / Elongin-C / Elongin-B / Kelch domain-containing protein 10
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsChittori, S. / Scott, D.C. / Schulman, B.A.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Cancer Institute (NIH/NCI)5R01CA247365 United States
CitationJournal: Nat Commun / Year: 2024
Title: Structural basis for C-degron selectivity across KLHDCX family E3 ubiquitin ligases.
Authors: Daniel C Scott / Sagar Chittori / Nicholas Purser / Moeko T King / Samuel A Maiwald / Kelly Churion / Amanda Nourse / Chan Lee / Joao A Paulo / Darcie J Miller / Stephen J Elledge / J Wade ...Authors: Daniel C Scott / Sagar Chittori / Nicholas Purser / Moeko T King / Samuel A Maiwald / Kelly Churion / Amanda Nourse / Chan Lee / Joao A Paulo / Darcie J Miller / Stephen J Elledge / J Wade Harper / Gary Kleiger / Brenda A Schulman /
Abstract: Specificity of the ubiquitin-proteasome system depends on E3 ligase-substrate interactions. Many such pairings depend on E3 ligases binding to peptide-like sequences - termed N- or C-degrons - at the ...Specificity of the ubiquitin-proteasome system depends on E3 ligase-substrate interactions. Many such pairings depend on E3 ligases binding to peptide-like sequences - termed N- or C-degrons - at the termini of substrates. However, our knowledge of structural features distinguishing closely related C-degron substrate-E3 pairings is limited. Here, by systematically comparing ubiquitylation activities towards a suite of common model substrates, and defining interactions by biochemistry, crystallography, and cryo-EM, we reveal principles of C-degron recognition across the KLHDCX family of Cullin-RING ligases (CRLs). First, a motif common across these E3 ligases anchors a substrate's C-terminus. However, distinct locations of this C-terminus anchor motif in different blades of the KLHDC2, KLHDC3, and KLHDC10 β-propellers establishes distinct relative positioning and molecular environments for substrate C-termini. Second, our structural data show KLHDC3 has a pre-formed pocket establishing preference for an Arg or Gln preceding a C-terminal Gly, whereas conformational malleability contributes to KLHDC10's recognition of varying features adjacent to substrate C-termini. Finally, additional non-consensus interactions, mediated by C-degron binding grooves and/or by distal propeller surfaces and substrate globular domains, can substantially impact substrate binding and ubiquitylatability. Overall, the data reveal combinatorial mechanisms determining specificity and plasticity of substrate recognition by KLDCX-family C-degron E3 ligases.
History
DepositionAug 19, 2024Deposition site: RCSB / Processing site: RCSB
Revision 1.0Nov 20, 2024Provider: repository / Type: Initial release
Revision 1.1Feb 5, 2025Group: Data collection / Database references / Category: citation / citation_author / em_admin
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _citation_author.identifier_ORCID / _citation_author.name / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Kelch domain-containing protein 10
B: Elongin-B
C: Elongin-C
D: Ubiquitin-C


Theoretical massNumber of molelcules
Total (without water)79,9294
Polymers79,9294
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Kelch domain-containing protein 10


Mass: 45745.375 Da / Num. of mol.: 1 / Fragment: residues 41-442
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: KLHDC10, KIAA0265 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q6PID8
#2: Protein Elongin-B / EloB / Elongin 18 kDa subunit / RNA polymerase II transcription factor SIII subunit B / SIII p18 / ...EloB / Elongin 18 kDa subunit / RNA polymerase II transcription factor SIII subunit B / SIII p18 / Transcription elongation factor B polypeptide 2


Mass: 13147.781 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ELOB, TCEB2 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q15370
#3: Protein Elongin-C / EloC / Elongin 15 kDa subunit / RNA polymerase II transcription factor SIII subunit C / SIII p15 / ...EloC / Elongin 15 kDa subunit / RNA polymerase II transcription factor SIII subunit C / SIII p15 / Transcription elongation factor B polypeptide 1


Mass: 12485.135 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ELOC, TCEB1 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q15369
#4: Protein Ubiquitin-C


Mass: 8550.794 Da / Num. of mol.: 1 / Mutation: K48C
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: UBC / Production host: Escherichia coli (E. coli) / References: UniProt: P0CG48
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 ARIH1-diUB-CRL2-KLHDC10 complex / Type: COMPLEX / Entity ID: all / Source: MULTIPLE SOURCES
Buffer solutionpH: 7.5
SpecimenConc.: 0.8 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 130000 X / Nominal defocus max: 2250 nm / Nominal defocus min: 600 nm
Image recordingElectron dose: 40 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of real images: 13395

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Processing

EM software
IDNameCategory
7Cootmodel fitting
9PHENIXmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 234648 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0034177
ELECTRON MICROSCOPYf_angle_d0.4745689
ELECTRON MICROSCOPYf_dihedral_angle_d4.326575
ELECTRON MICROSCOPYf_chiral_restr0.041642
ELECTRON MICROSCOPYf_plane_restr0.003726

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