+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-27662 | ||||||||||||
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Title | Open state of Rad24-RFC:9-1-1 bound to a 5' ss/dsDNA junction | ||||||||||||
Map data | Open state of Rad24-RFC:9-1-1 bound to a 5' ss/dsDNA junction | ||||||||||||
Sample |
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Keywords | DNA damage checkpoint / REPLICATION-DNA complex | ||||||||||||
Function / homology | Function and homology information meiotic DNA integrity checkpoint signaling / checkpoint clamp complex / cell cycle / DNA clamp unloading / Rad17 RFC-like complex / Gap-filling DNA repair synthesis and ligation in GG-NER / Elg1 RFC-like complex / Ctf18 RFC-like complex / DNA replication factor C complex / Polymerase switching ...meiotic DNA integrity checkpoint signaling / checkpoint clamp complex / cell cycle / DNA clamp unloading / Rad17 RFC-like complex / Gap-filling DNA repair synthesis and ligation in GG-NER / Elg1 RFC-like complex / Ctf18 RFC-like complex / DNA replication factor C complex / Polymerase switching / DNA clamp loader activity / Translesion Synthesis by POLH / telomere maintenance via recombination / Translesion synthesis by REV1 / Translesion synthesis by POLK / Translesion synthesis by POLI / DNA replication checkpoint signaling / Activation of ATR in response to replication stress / Termination of translesion DNA synthesis / 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 / Gap-filling DNA repair synthesis and ligation in TC-NER / Dual incision in TC-NER / subtelomeric heterochromatin formation / mismatch repair / 3'-5' exonuclease activity / telomere maintenance / DNA damage checkpoint signaling / meiotic cell cycle / cellular response to ionizing radiation / nucleotide-excision repair / double-strand break repair via homologous recombination / DNA-templated DNA replication / double-strand break repair / site of double-strand break / double-stranded DNA binding / damaged DNA binding / chromosome, telomeric region / DNA repair / ATP hydrolysis activity / DNA binding / ATP binding / nucleus / cytosol Similarity search - Function | ||||||||||||
Biological species | Saccharomyces cerevisiae (brewer's yeast) | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.1 Å | ||||||||||||
Authors | Schrecker M / Hite RK | ||||||||||||
Funding support | United States, 3 items
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Citation | Journal: Elife / Year: 2022 Title: Multistep loading of a DNA sliding clamp onto DNA by replication factor C. Authors: Marina Schrecker / Juan C Castaneda / Sujan Devbhandari / Charanya Kumar / Dirk Remus / Richard K Hite / Abstract: The DNA sliding clamp proliferating cell nuclear antigen (PCNA) is an essential co-factor for many eukaryotic DNA metabolic enzymes. PCNA is loaded around DNA by the ATP-dependent clamp loader ...The DNA sliding clamp proliferating cell nuclear antigen (PCNA) is an essential co-factor for many eukaryotic DNA metabolic enzymes. PCNA is loaded around DNA by the ATP-dependent clamp loader replication factor C (RFC), which acts at single-stranded (ss)/double-stranded DNA (dsDNA) junctions harboring a recessed 3' end (3' ss/dsDNA junctions) and at DNA nicks. To illuminate the loading mechanism we have investigated the structure of RFC:PCNA bound to ATPγS and 3' ss/dsDNA junctions or nicked DNA using cryogenic electron microscopy. Unexpectedly, we observe open and closed PCNA conformations in the RFC:PCNA:DNA complex, revealing that PCNA can adopt an open, planar conformation that allows direct insertion of dsDNA, and raising the question of whether PCNA ring closure is mechanistically coupled to ATP hydrolysis. By resolving multiple DNA-bound states of RFC:PCNA we observe that partial melting facilitates lateral insertion into the central channel formed by RFC:PCNA. We also resolve the Rfc1 N-terminal domain and demonstrate that its single BRCT domain participates in coordinating DNA prior to insertion into the central RFC channel, which promotes PCNA loading on the lagging strand of replication forks in vitro. Combined, our data suggest a comprehensive and fundamentally revised model for the RFC-catalyzed loading of PCNA onto DNA. | ||||||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_27662.map.gz | 108.7 MB | EMDB map data format | |
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Header (meta data) | emd-27662-v30.xml emd-27662.xml | 33.7 KB 33.7 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_27662_fsc.xml | 12.6 KB | Display | FSC data file |
Images | emd_27662.png | 199.1 KB | ||
Filedesc metadata | emd-27662.cif.gz | 9.1 KB | ||
Others | emd_27662_additional_1.map.gz emd_27662_half_map_1.map.gz emd_27662_half_map_2.map.gz | 677.3 MB 200.3 MB 200.3 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-27662 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-27662 | HTTPS FTP |
-Validation report
Summary document | emd_27662_validation.pdf.gz | 840.6 KB | Display | EMDB validaton report |
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Full document | emd_27662_full_validation.pdf.gz | 840.1 KB | Display | |
Data in XML | emd_27662_validation.xml.gz | 21.5 KB | Display | |
Data in CIF | emd_27662_validation.cif.gz | 28 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-27662 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-27662 | HTTPS FTP |
-Related structure data
Related structure data | 8dqwMC 8dqxC 8dqzC 8dr0C 8dr1C 8dr3C 8dr4C 8dr5C 8dr6C 8dr7C C: citing same article (ref.) M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_27662.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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Annotation | Open state of Rad24-RFC:9-1-1 bound to a 5' ss/dsDNA junction | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.826 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Additional map: Density-modified and 1.5x resampled map for model building
File | emd_27662_additional_1.map | ||||||||||||
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Annotation | Density-modified and 1.5x resampled map for model building | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Half map A
File | emd_27662_half_map_1.map | ||||||||||||
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Annotation | Half map A | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Half map B
File | emd_27662_half_map_2.map | ||||||||||||
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Annotation | Half map B | ||||||||||||
Projections & Slices |
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Density Histograms |
-Sample components
+Entire : Open state of Rad24-RFC:9-1-1 bound to a 5' ss/dsDNA junction
+Supramolecule #1: Open state of Rad24-RFC:9-1-1 bound to a 5' ss/dsDNA junction
+Macromolecule #1: Replication factor C subunit 4
+Macromolecule #2: Replication factor C subunit 3
+Macromolecule #3: Replication factor C subunit 2
+Macromolecule #4: Replication factor C subunit 5
+Macromolecule #5: DNA damage checkpoint control protein RAD17
+Macromolecule #6: DDC1 isoform 1
+Macromolecule #7: DNA damage checkpoint control protein MEC3
+Macromolecule #8: RAD24 isoform 1
+Macromolecule #9: DNA (50-MER)
+Macromolecule #10: DNA (5'-D(P*CP*GP*TP*CP*CP*CP*TP*TP*CP*C)-3')
+Macromolecule #11: MAGNESIUM ION
+Macromolecule #12: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
+Macromolecule #13: GUANOSINE-5'-DIPHOSPHATE
+Macromolecule #14: water
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Concentration | 1.0 mg/mL | ||||||||
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Buffer | pH: 7.6 Component:
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Grid | Model: Quantifoil R1.2/1.3 / Material: GRAPHENE OXIDE / Mesh: 400 / Support film - Material: GRAPHENE OXIDE / Support film - topology: CONTINUOUS | ||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 297 K / Instrument: FEI VITROBOT MARK IV |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 66.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.7000000000000001 µm |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |