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- PDB-7b5m: Ubiquitin ligation to F-box protein substrates by SCF-RBR E3-E3 s... -
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Open data
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Basic information
Entry | Database: PDB / ID: 7b5m | |||||||||
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Title | Ubiquitin ligation to F-box protein substrates by SCF-RBR E3-E3 super-assembly: CUL1-RBX1-SKP1-SKP2-CKSHS1-p27~Ub~ARIH1. Transition State 2 | |||||||||
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![]() | LIGASE / ubiquitin / ubiquitin ligase / E3 ligase / F-box protein / RBR ligase / Cullin-RING-Ligase / CRL / SCF / NEDD8 / Post-translational modification / ubiquitylation | |||||||||
Function / homology | ![]() PKR/eIFalpha signaling / cyclin-dependent protein kinase activating kinase regulator activity / regulation of lens fiber cell differentiation / negative regulation of cardiac muscle tissue regeneration / negative regulation of cyclin-dependent protein kinase activity / positive regulation of protein polyubiquitination / ubiquitin-like protein transferase activity / Lewy body / autophagic cell death / Parkin-FBXW7-Cul1 ubiquitin ligase complex ...PKR/eIFalpha signaling / cyclin-dependent protein kinase activating kinase regulator activity / regulation of lens fiber cell differentiation / negative regulation of cardiac muscle tissue regeneration / negative regulation of cyclin-dependent protein kinase activity / positive regulation of protein polyubiquitination / ubiquitin-like protein transferase activity / Lewy body / autophagic cell death / Parkin-FBXW7-Cul1 ubiquitin ligase complex / FOXO-mediated transcription of cell cycle genes / F-box domain binding / RBR-type E3 ubiquitin transferase / negative regulation of epithelial cell proliferation involved in prostate gland development / PcG protein complex / Aberrant regulation of mitotic exit in cancer due to RB1 defects / regulation of cell cycle G1/S phase transition / regulation of exit from mitosis / cullin-RING-type E3 NEDD8 transferase / cellular response to chemical stress / NEDD8 transferase activity / mitotic cell cycle phase transition / cullin-RING ubiquitin ligase complex / epithelial cell proliferation involved in prostate gland development / negative regulation of epithelial cell apoptotic process / negative regulation of cyclin-dependent protein serine/threonine kinase activity / negative regulation of phosphorylation / Cul7-RING ubiquitin ligase complex / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / positive regulation of ubiquitin protein ligase activity / ubiquitin ligase activator activity / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / maintenance of protein location in nucleus / cyclin-dependent protein serine/threonine kinase inhibitor activity / positive regulation of protein autoubiquitination / protein neddylation / RHO GTPases activate CIT / cyclin-dependent protein serine/threonine kinase activator activity / nuclear export / ubiquitin conjugating enzyme binding / NEDD8 ligase activity / Cul5-RING ubiquitin ligase complex / negative regulation of response to oxidative stress / AKT phosphorylates targets in the cytosol / positive regulation of intracellular estrogen receptor signaling pathway / ubiquitin-ubiquitin ligase activity / Cul4A-RING E3 ubiquitin ligase complex / epithelial cell apoptotic process / SCF ubiquitin ligase complex / cellular response to antibiotic / Cul2-RING ubiquitin ligase complex / ubiquitin ligase complex scaffold activity / Cul4B-RING E3 ubiquitin ligase complex / negative regulation of type I interferon production / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / Cul3-RING ubiquitin ligase complex / negative regulation of kinase activity / regulation of cyclin-dependent protein serine/threonine kinase activity / molecular function inhibitor activity / cellular response to lithium ion / RSV-host interactions / protein kinase inhibitor activity / p53-Dependent G1 DNA Damage Response / Prolactin receptor signaling / PTK6 Regulates Cell Cycle / protein monoubiquitination / Constitutive Signaling by AKT1 E17K in Cancer / regulation of G1/S transition of mitotic cell cycle / Defective binding of RB1 mutants to E2F1,(E2F2, E2F3) / cullin family protein binding / negative regulation of vascular associated smooth muscle cell proliferation / inner ear development / protein K63-linked ubiquitination / cellular response to organic cyclic compound / negative regulation of mitotic cell cycle / positive regulation of double-strand break repair via homologous recombination / ubiquitin-like ligase-substrate adaptor activity / Estrogen-dependent nuclear events downstream of ESR-membrane signaling / response to amino acid / protein K48-linked ubiquitination / TP53 Regulates Transcription of Genes Involved in G1 Cell Cycle Arrest / Nuclear events stimulated by ALK signaling in cancer / response to glucose / Cyclin E associated events during G1/S transition / response to cadmium ion / Cajal body / cyclin-dependent protein kinase holoenzyme complex / Cyclin A:Cdk2-associated events at S phase entry / ubiquitin ligase complex / Maturation of protein E / Maturation of protein E / ER Quality Control Compartment (ERQC) / Notch signaling pathway / Myoclonic epilepsy of Lafora / positive regulation of microtubule polymerization / FLT3 signaling by CBL mutants / Prevention of phagosomal-lysosomal fusion / IRAK2 mediated activation of TAK1 complex / Alpha-protein kinase 1 signaling pathway / Glycogen synthesis Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.91 Å | |||||||||
![]() | Horn-Ghetko, D. / Prabu, J.R. / Schulman, B.A. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Ubiquitin ligation to F-box protein targets by SCF-RBR E3-E3 super-assembly. Authors: Daniel Horn-Ghetko / David T Krist / J Rajan Prabu / Kheewoong Baek / Monique P C Mulder / Maren Klügel / Daniel C Scott / Huib Ovaa / Gary Kleiger / Brenda A Schulman / ![]() ![]() ![]() Abstract: E3 ligases are typically classified by hallmark domains such as RING and RBR, which are thought to specify unique catalytic mechanisms of ubiquitin transfer to recruited substrates. However, rather ...E3 ligases are typically classified by hallmark domains such as RING and RBR, which are thought to specify unique catalytic mechanisms of ubiquitin transfer to recruited substrates. However, rather than functioning individually, many neddylated cullin-RING E3 ligases (CRLs) and RBR-type E3 ligases in the ARIH family-which together account for nearly half of all ubiquitin ligases in humans-form E3-E3 super-assemblies. Here, by studying CRLs in the SKP1-CUL1-F-box (SCF) family, we show how neddylated SCF ligases and ARIH1 (an RBR-type E3 ligase) co-evolved to ubiquitylate diverse substrates presented on various F-box proteins. We developed activity-based chemical probes that enabled cryo-electron microscopy visualization of steps in E3-E3 ubiquitylation, initiating with ubiquitin linked to the E2 enzyme UBE2L3, then transferred to the catalytic cysteine of ARIH1, and culminating in ubiquitin linkage to a substrate bound to the SCF E3 ligase. The E3-E3 mechanism places the ubiquitin-linked active site of ARIH1 adjacent to substrates bound to F-box proteins (for example, substrates with folded structures or limited length) that are incompatible with previously described conventional RING E3-only mechanisms. The versatile E3-E3 super-assembly may therefore underlie widespread ubiquitylation. | |||||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 301.7 KB | Display | ![]() |
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PDB format | ![]() | 238.8 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 12040MC ![]() 7b5lC ![]() 7b5nC ![]() 7b5rC ![]() 7b5sC C: citing same article ( M: map data used to model this data |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Protein , 2 types, 2 molecules CU
#1: Protein | Mass: 89800.367 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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#6: Protein | Mass: 8519.778 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
-E3 ubiquitin-protein ligase ... , 2 types, 2 molecules HR
#2: Protein | Mass: 64005.605 Da / Num. of mol.: 1 / Mutation: F430A, E431A, E503A Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() References: UniProt: Q9Y4X5, RBR-type E3 ubiquitin transferase |
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#7: Protein | Mass: 12289.977 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() References: UniProt: P62877, RING-type E3 ubiquitin transferase, cullin-RING-type E3 NEDD8 transferase |
-S-phase kinase-associated protein ... , 2 types, 2 molecules TS
#3: Protein | Mass: 47817.785 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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#5: Protein | Mass: 18679.965 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
-Cyclin-dependent ... , 2 types, 2 molecules KP
#4: Protein | Mass: 9679.211 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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#8: Protein | Mass: 22185.262 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() |
-Non-polymers , 1 types, 5 molecules ![](data/chem/img/ZN.gif)
#9: Chemical | ChemComp-ZN / |
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-Details
Has ligand of interest | N |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component |
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Molecular weight | Value: 0.25 MDa | ||||||||||||||||||||||||||||||
Source (natural) |
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Source (recombinant) |
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Buffer solution | pH: 7.8 | ||||||||||||||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 70 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.18.2_3874: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.91 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 759489 / Symmetry type: POINT | ||||||||||||||||||||||||
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