+Open data
-Basic information
Entry | Database: PDB / ID: 6of4 | ||||||
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Title | Precursor ribosomal RNA processing complex, apo-state. | ||||||
Components |
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Keywords | RNA BINDING PROTEIN / Complex / Ribonuclease / Polynucleotide kinase | ||||||
Function / homology | Function and homology information polynucleotide 5'-hydroxyl-kinase activity / Las1 complex / RNA processing / rRNA processing / endonuclease activity / ATP binding Similarity search - Function | ||||||
Biological species | Chaetomium thermophilum (fungus) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å | ||||||
Authors | Pillon, M.C. / Hsu, A.L. / Krahn, J.M. / Williams, J.G. / Goslen, K.H. / Sobhany, M. / Borgnia, M.J. / Stanley, R.E. | ||||||
Funding support | United States, 1items
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Citation | Journal: Nat Struct Mol Biol / Year: 2019 Title: Cryo-EM reveals active site coordination within a multienzyme pre-rRNA processing complex. Authors: Monica C Pillon / Allen L Hsu / Juno M Krahn / Jason G Williams / Kevin H Goslen / Mack Sobhany / Mario J Borgnia / Robin E Stanley / Abstract: Ribosome assembly is a complex process reliant on the coordination of trans-acting enzymes to produce functional ribosomal subunits and secure the translational capacity of cells. The ...Ribosome assembly is a complex process reliant on the coordination of trans-acting enzymes to produce functional ribosomal subunits and secure the translational capacity of cells. The endoribonuclease (RNase) Las1 and the polynucleotide kinase (PNK) Grc3 assemble into a multienzyme complex, herein designated RNase PNK, to orchestrate processing of precursor ribosomal RNA (rRNA). RNase PNK belongs to the functionally diverse HEPN nuclease superfamily, whose members rely on distinct cues for nuclease activation. To establish how RNase PNK coordinates its dual enzymatic activities, we solved a series of cryo-EM structures of Chaetomium thermophilum RNase PNK in multiple conformational states. The structures reveal that RNase PNK adopts a butterfly-like architecture, harboring a composite HEPN nuclease active site flanked by discrete RNA kinase sites. We identify two molecular switches that coordinate nuclease and kinase function. Together, our structures and corresponding functional studies establish a new mechanism of HEPN nuclease activation essential for ribosome production. | ||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 6of4.cif.gz | 268.3 KB | Display | PDBx/mmCIF format |
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PDB format | pdb6of4.ent.gz | 204 KB | Display | PDB format |
PDBx/mmJSON format | 6of4.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 6of4_validation.pdf.gz | 866.7 KB | Display | wwPDB validaton report |
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Full document | 6of4_full_validation.pdf.gz | 889.6 KB | Display | |
Data in XML | 6of4_validation.xml.gz | 43.9 KB | Display | |
Data in CIF | 6of4_validation.cif.gz | 65.9 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/of/6of4 ftp://data.pdbj.org/pub/pdb/validation_reports/of/6of4 | HTTPS FTP |
-Related structure data
Related structure data | 20042MC 6of2C 6of3C M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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-Components
#1: Protein | Mass: 43842.871 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Chaetomium thermophilum (strain DSM 1495 / CBS 144.50 / IMI 039719) (fungus) Strain: DSM 1495 / CBS 144.50 / IMI 039719 / Gene: CTHT_0066080 / Production host: Escherichia coli (E. coli) / References: UniProt: G0SGE9 #2: Protein | Mass: 69660.539 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Chaetomium thermophilum (strain DSM 1495 / CBS 144.50 / IMI 039719) (fungus) Strain: DSM 1495 / CBS 144.50 / IMI 039719 / Gene: CTHT_0016120 / Production host: Escherichia coli (E. coli) / References: UniProt: G0S263 |
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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: Precursor Ribosomal RNA Processing Complex / Type: COMPLEX Details: Precursor Ribosomal RNA Processing Complex coordinates removal of a transcribed spacer. Entity ID: all / Source: RECOMBINANT |
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Molecular weight | Value: 0.234 MDa / Experimental value: NO |
Source (natural) | Organism: Chaetomium thermophilum (fungus) |
Source (recombinant) | Organism: Escherichia coli (E. coli) |
Buffer solution | pH: 8 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: NITROGEN |
-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 |
Image recording | Electron dose: 40 e/Å2 / Film or detector model: FEI FALCON III (4k x 4k) |
-Processing
Software | Name: PHENIX / Version: 1.15.2_3472: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction | Type: NONE | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 102753 / Symmetry type: POINT | ||||||||||||||||||||||||
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