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Yorodumi- PDB-7sh2: Structure of the yeast Rad24-RFC loader bound to DNA and the open... -
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Open data
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Basic information
| Entry | Database: PDB / ID: 7sh2 | |||||||||||||||||||||||||||||||||
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| Title | Structure of the yeast Rad24-RFC loader bound to DNA and the open 9-1-1 clamp | |||||||||||||||||||||||||||||||||
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Keywords | DNA BINDING PROTEIN/DNA / DNA damage repair / Rad24-RFC / 9-1-1 clamp / DNA clamp / alternative clamp loader / DNA damage signaling / DNA BINDING PROTEIN-DNA complex | |||||||||||||||||||||||||||||||||
| Function / homology | Function and homology informationcheckpoint clamp complex / meiotic recombination checkpoint signaling / Rad17 RFC-like complex / Gap-filling DNA repair synthesis and ligation in GG-NER / Elg1 RFC-like complex / DNA replication factor C complex / Ctf18 RFC-like complex / Polymerase switching / DNA clamp loader activity / nuclease activity ...checkpoint clamp complex / meiotic recombination checkpoint signaling / Rad17 RFC-like complex / Gap-filling DNA repair synthesis and ligation in GG-NER / Elg1 RFC-like complex / DNA replication factor C complex / Ctf18 RFC-like complex / Polymerase switching / DNA clamp loader activity / nuclease activity / Translesion synthesis by REV1 / Translesion synthesis by POLK / Translesion synthesis by POLI / Translesion Synthesis by POLH / DNA replication checkpoint signaling / Termination of translesion DNA synthesis / Activation of ATR in response to replication stress / mitotic DNA replication checkpoint signaling / reciprocal meiotic recombination / mitotic intra-S DNA damage checkpoint signaling / recombinational repair / sister chromatid cohesion / mitotic sister chromatid cohesion / leading strand elongation / mitotic G2 DNA damage checkpoint signaling / Gap-filling DNA repair synthesis and ligation in TC-NER / Dual incision in TC-NER / protein kinase activator activity / mismatch repair / mitotic G1 DNA damage checkpoint signaling / DNA damage checkpoint signaling / condensed nuclear chromosome / cellular response to ionizing radiation / meiotic cell cycle / nucleotide-excision repair / DNA-templated DNA replication / double-strand break repair / double-stranded DNA binding / damaged DNA binding / DNA repair / chromatin binding / ATP hydrolysis activity / DNA binding / ATP binding / nucleus / cytoplasm / cytosol Similarity search - Function | |||||||||||||||||||||||||||||||||
| Biological species | ![]() synthetic construct (others) | |||||||||||||||||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.23 Å | |||||||||||||||||||||||||||||||||
Authors | Zheng, F. / Georgescu, R. / Yao, Y.N. / O'Donnell, M.E. / Li, H. | |||||||||||||||||||||||||||||||||
| Funding support | United States, 3items
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Citation | Journal: Nat Struct Mol Biol / Year: 2022Title: DNA is loaded through the 9-1-1 DNA checkpoint clamp in the opposite direction of the PCNA clamp. Authors: Fengwei Zheng / Roxana E Georgescu / Nina Y Yao / Michael E O'Donnell / Huilin Li / ![]() Abstract: The 9-1-1 DNA checkpoint clamp is loaded onto 5'-recessed DNA to activate the DNA damage checkpoint that arrests the cell cycle. The 9-1-1 clamp is a heterotrimeric ring that is loaded in ...The 9-1-1 DNA checkpoint clamp is loaded onto 5'-recessed DNA to activate the DNA damage checkpoint that arrests the cell cycle. The 9-1-1 clamp is a heterotrimeric ring that is loaded in Saccharomyces cerevisiae by Rad24-RFC (hRAD17-RFC), an alternate clamp loader in which Rad24 replaces Rfc1 in the RFC1-5 clamp loader of proliferating cell nuclear antigen (PCNA). The 9-1-1 clamp loading mechanism has been a mystery, because, unlike RFC, which loads PCNA onto a 3'-recessed junction, Rad24-RFC loads the 9-1-1 ring onto a 5'-recessed DNA junction. Here we report two cryo-EM structures of Rad24-RFC-DNA with a closed or 27-Å open 9-1-1 clamp. The structures reveal a completely unexpected mechanism by which a clamp can be loaded onto DNA. Unlike RFC, which encircles DNA, Rad24 binds 5'-DNA on its surface, not inside the loader, and threads the 3' ssDNA overhang into the 9-1-1 clamp from above the ring. | |||||||||||||||||||||||||||||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 7sh2.cif.gz | 493.1 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb7sh2.ent.gz | 383.6 KB | Display | PDB format |
| PDBx/mmJSON format | 7sh2.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 7sh2_validation.pdf.gz | 1.3 MB | Display | wwPDB validaton report |
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| Full document | 7sh2_full_validation.pdf.gz | 1.3 MB | Display | |
| Data in XML | 7sh2_validation.xml.gz | 69.8 KB | Display | |
| Data in CIF | 7sh2_validation.cif.gz | 106.1 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/sh/7sh2 ftp://data.pdbj.org/pub/pdb/validation_reports/sh/7sh2 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 25122MC ![]() 7sgzC M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-Protein , 2 types, 2 molecules AF
| #1: Protein | Mass: 75823.477 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: RAD24, YER173W, SYGP-ORF60 / Production host: ![]() |
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| #6: Protein | Mass: 50407.812 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: PACBIOSEQ_LOCUS4067, PACBIOSEQ_LOCUS4215, SCNYR20_0004029900, SCP684_0004029500 Production host: ![]() |
-Replication factor C subunit ... , 4 types, 4 molecules BCDE
| #2: Protein | Mass: 36201.039 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: RFC4, YOL094C, O0923 / Production host: ![]() |
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| #3: Protein | Mass: 38254.543 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: RFC3, YNL290W, N0533 / Production host: ![]() |
| #4: Protein | Mass: 39794.473 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: RFC2, YJR068W, J1808 / Production host: ![]() |
| #5: Protein | Mass: 39993.582 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: RFC5, YBR087W, YBR0810 / Production host: ![]() |
-DNA damage checkpoint ... , 2 types, 2 molecules GH
| #7: Protein | Mass: 45637.527 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: RAD17, YOR368W / Production host: ![]() |
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| #8: Protein | Mass: 69787.500 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: DDC1, YPL194W / Production host: ![]() |
-DNA chain , 2 types, 2 molecules PT
| #9: DNA chain | Mass: 6136.008 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others) |
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| #10: DNA chain | Mass: 12214.818 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others) |
-Non-polymers , 3 types, 9 molecules 




| #11: Chemical | ChemComp-AGS / #12: Chemical | ChemComp-MG / #13: Chemical | ChemComp-ADP / | |
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-Details
| Has ligand of interest | Y |
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| Has protein modification | N |
-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
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| Source (natural) |
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| Source (recombinant) | Organism: ![]() | ||||||||||||||||||||||||||||
| Buffer solution | pH: 7.5 | ||||||||||||||||||||||||||||
| 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: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD |
| Image recording | Electron dose: 65 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
| Software | Name: PHENIX / Version: 1.19.2_4158: / Classification: refinement | ||||||||||||||||||||||||
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| EM software | Name: PHENIX / Category: model refinement | ||||||||||||||||||||||||
| CTF correction | Type: NONE | ||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3.23 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 302403 / Symmetry type: POINT | ||||||||||||||||||||||||
| Refine LS restraints |
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About Yorodumi





United States, 3items
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FIELD EMISSION GUN