+Open data
-Basic information
Entry | Database: PDB / ID: 7uwf | ||||||
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Title | Human Rix1 sub-complex scaffold | ||||||
Components |
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Keywords | STRUCTURAL PROTEIN / scaffold / complex / WD-repeat / solenoid | ||||||
Function / homology | Function and homology information rixosome complex / dynein axonemal particle / nuclear pre-replicative complex / Major pathway of rRNA processing in the nucleolus and cytosol / DNA-templated DNA replication / rRNA processing / nucleolus / nucleoplasm / cytoplasm Similarity search - Function | ||||||
Biological species | Homo sapiens (human) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.7 Å | ||||||
Authors | Gordon, J. / Stanley, R.E. | ||||||
Funding support | United States, 1items
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Citation | Journal: Nat Commun / Year: 2022 Title: Cryo-EM reveals the architecture of the PELP1-WDR18 molecular scaffold. Authors: Jacob Gordon / Fleur L Chapus / Elizabeth G Viverette / Jason G Williams / Leesa J Deterding / Juno M Krahn / Mario J Borgnia / Joseph Rodriguez / Alan J Warren / Robin E Stanley / Abstract: PELP1 (Proline-, Glutamic acid-, Leucine-rich protein 1) is a large scaffolding protein that functions in many cellular pathways including steroid receptor (SR) coactivation, heterochromatin ...PELP1 (Proline-, Glutamic acid-, Leucine-rich protein 1) is a large scaffolding protein that functions in many cellular pathways including steroid receptor (SR) coactivation, heterochromatin maintenance, and ribosome biogenesis. PELP1 is a proto-oncogene whose expression is upregulated in many human cancers, but how the PELP1 scaffold coordinates its diverse cellular functions is poorly understood. Here we show that PELP1 serves as the central scaffold for the human Rix1 complex whose members include WDR18, TEX10, and SENP3. We reconstitute the mammalian Rix1 complex and identified a stable sub-complex comprised of the conserved PELP1 Rix1 domain and WDR18. We determine a 2.7 Å cryo-EM structure of the subcomplex revealing an interconnected tetrameric assembly and the architecture of PELP1's signaling motifs, including eleven LxxLL motifs previously implicated in SR signaling and coactivation of Estrogen Receptor alpha (ERα) mediated transcription. However, the structure shows that none of these motifs is in a conformation that would support SR binding. Together this work establishes that PELP1 scaffolds the Rix1 complex, and association with WDR18 may direct PELP1's activity away from SR coactivation. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 7uwf.cif.gz | 312.1 KB | Display | PDBx/mmCIF format |
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PDB format | pdb7uwf.ent.gz | 238.2 KB | Display | PDB format |
PDBx/mmJSON format | 7uwf.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 7uwf_validation.pdf.gz | 1 MB | Display | wwPDB validaton report |
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Full document | 7uwf_full_validation.pdf.gz | 1 MB | Display | |
Data in XML | 7uwf_validation.xml.gz | 51.7 KB | Display | |
Data in CIF | 7uwf_validation.cif.gz | 78.9 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/uw/7uwf ftp://data.pdbj.org/pub/pdb/validation_reports/uw/7uwf | HTTPS FTP |
-Related structure data
Related structure data | 26831MC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
-Assembly
Deposited unit |
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Noncrystallographic symmetry (NCS) | NCS domain:
NCS domain segments:
NCS ensembles :
NCS oper:
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-Components
#1: Protein | Mass: 49183.957 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Cell line: HEK293FT / Gene: WDR18 / Cell line (production host): HEK293FT / Production host: Homo sapiens (human) / References: UniProt: Q9BV38 #2: Protein | Mass: 69220.078 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Cell line: HEK293FT / Gene: PELP1 / Cell line (production host): HEK293FT / Production host: Homo sapiens (human) / References: UniProt: C9JFV4 |
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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 |
-Sample preparation
Component | Name: Human Rix1 sub-complex scaffold / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT |
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Molecular weight | Value: 236.76 kDa/nm / Experimental value: NO |
Source (natural) | Organism: Homo sapiens (human) |
Source (recombinant) | Organism: Homo sapiens (human) / Strain: HEK293FT / Plasmid: pcDNA3.1 |
Buffer solution | pH: 7.7 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Grid material: GOLD / Grid type: C-flat-1.2/1.3 |
Vitrification | Instrument: LEICA EM GP / Cryogen name: ETHANE |
-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: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 81000 X / Nominal defocus max: 2200 nm / Nominal defocus min: 1200 nm |
Specimen holder | Cryogen: NITROGEN |
Image recording | Electron dose: 40 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
-Processing
Software |
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EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C2 (2 fold cyclic) | ||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 2.7 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 278192 / Algorithm: FOURIER SPACE / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||
Atomic model building | Space: REAL | ||||||||||||||||||||||||||||||||||||
Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 21.72 Å2 | ||||||||||||||||||||||||||||||||||||
Refine LS restraints |
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Refine LS restraints NCS |
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