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Yorodumi- EMDB-29413: EM map of S. cerevisiae Rad24-RFC loading the 9-1-1 clamp onto a ... -
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Basic information
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| Title | EM map of S. cerevisiae Rad24-RFC loading the 9-1-1 clamp onto a 10-nt gapped DNA in step 2 (open 9-1-1 ring and flexibly bound chamber DNA) | ||||||||||||
Map data | EM map of S. cerevisiae Rad24-RFC loading the 9-1-1 clamp onto a 10-nt gapped DNA in step 2 (open 9-1-1 ring and flexibly bound chamber DNA) | ||||||||||||
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Keywords | DNA damage repair / Rad24-RFC / 9-1-1 clamp / DNA clamp / alternative clamp loader / DNA damage signaling / DNA BINDING PROTEIN-DNA complex / CELL CYCLE-DNA complex | ||||||||||||
| Function / homology | Function and homology informationmeiotic DNA integrity checkpoint signaling / checkpoint clamp complex / 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 / Translesion synthesis by REV1 ...meiotic DNA integrity checkpoint signaling / checkpoint clamp complex / 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 / 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 / telomere maintenance via recombination / 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 / cellular response to ionizing radiation / meiotic cell cycle / 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 / chromatin binding / ATP hydrolysis activity / DNA binding / ATP binding / nucleus / cytosol Similarity search - Function | ||||||||||||
| Biological species | synthetic construct (others) / ![]() | ||||||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 2.94 Å | ||||||||||||
Authors | Zheng F / Georgescu R / Yao YN / O'Donnell ME / Li H | ||||||||||||
| Funding support | United States, 3 items
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Citation | Journal: bioRxiv / Year: 2023Title: Structures of 9-1-1 DNA checkpoint clamp loading at gaps from start to finish and ramification to biology. Authors: Fengwei Zheng / Roxana E Georgescu / Nina Y Yao / Michael E O'Donnell / Huilin Li / ![]() Abstract: Recent structural studies show the Rad24-RFC loads the 9-1-1 checkpoint clamp onto a recessed 5' end by binding the 5' DNA on Rad24 at an external surface site and threading the 3' ssDNA into the ...Recent structural studies show the Rad24-RFC loads the 9-1-1 checkpoint clamp onto a recessed 5' end by binding the 5' DNA on Rad24 at an external surface site and threading the 3' ssDNA into the well-established internal chamber and into 9-1-1. We find here that Rad24-RFC loads 9-1-1 onto DNA gaps in preference to a recessed 5' DNA end, thus presumably leaving 9-1-1 on a 3' ss/ds DNA after Rad24-RFC ejects from the 5' gap end and may explain reports of 9-1-1 directly functioning in DNA repair with various TLS polymerases, in addition to signaling the ATR kinase. To gain a deeper understanding of 9-1-1 loading at gaps we report high-resolution structures of Rad24-RFC during loading of 9-1-1 onto 10-nt and 5-nt gapped DNAs. At a 10-nt gap we captured five Rad24-RFC-9-1-1 loading intermediates in which the 9-1-1 DNA entry gate varies from fully open to fully closed around DNA using ATPγS, supporting the emerging view that ATP hydrolysis is not needed for clamp opening/closing, but instead for dissociation of the loader from the clamp encircling DNA. The structure of Rad24-RFC-9-1-1 at a 5-nt gap shows a 180° axially rotated 3'-dsDNA which orients the template strand to bridge the 3'- and 5'- junctions with a minimum 5-nt ssDNA. The structures reveal a unique loop on Rad24 that limits the length of dsDNA in the inner chamber, and inability to melt DNA ends unlike RFC, thereby explaining Rad24-RFC's preference for a preexisting ssDNA gap and suggesting a direct role in gap repair in addition to its checkpoint role. | ||||||||||||
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Structure visualization
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_29413.map.gz | 267.1 MB | EMDB map data format | |
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| Header (meta data) | emd-29413-v30.xml emd-29413.xml | 31.5 KB 31.5 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_29413_fsc.xml | 13.9 KB | Display | FSC data file |
| Images | emd_29413.png | 72.4 KB | ||
| Filedesc metadata | emd-29413.cif.gz | 9.2 KB | ||
| Others | emd_29413_half_map_1.map.gz emd_29413_half_map_2.map.gz | 262.1 MB 262.1 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-29413 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-29413 | HTTPS FTP |
-Validation report
| Summary document | emd_29413_validation.pdf.gz | 1.1 MB | Display | EMDB validaton report |
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| Full document | emd_29413_full_validation.pdf.gz | 1.1 MB | Display | |
| Data in XML | emd_29413_validation.xml.gz | 23.1 KB | Display | |
| Data in CIF | emd_29413_validation.cif.gz | 29.9 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-29413 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-29413 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 8fs4MC ![]() 8fs3C ![]() 8fs5C ![]() 8fs6C ![]() 8fs7C ![]() 8fs8C M: atomic model generated by this map C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_29413.map.gz / Format: CCP4 / Size: 282.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Annotation | EM map of S. cerevisiae Rad24-RFC loading the 9-1-1 clamp onto a 10-nt gapped DNA in step 2 (open 9-1-1 ring and flexibly bound chamber DNA) | ||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 0.828 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Half map: half map B
| File | emd_29413_half_map_1.map | ||||||||||||
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| Annotation | half map B | ||||||||||||
| Projections & Slices |
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| Density Histograms |
-Half map: half map A
| File | emd_29413_half_map_2.map | ||||||||||||
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| Annotation | half map A | ||||||||||||
| Projections & Slices |
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| Density Histograms |
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Sample components
+Entire : Rad24-RFC-911 clamp-DNA
+Supramolecule #1: Rad24-RFC-911 clamp-DNA
+Supramolecule #2: DNA
+Supramolecule #3: Proteins complex
+Macromolecule #1: Checkpoint protein RAD24
+Macromolecule #2: Replication factor C subunit 4
+Macromolecule #3: Replication factor C subunit 3
+Macromolecule #4: Replication factor C subunit 2
+Macromolecule #5: Replication factor C subunit 5
+Macromolecule #6: DNA damage checkpoint control protein MEC3
+Macromolecule #7: DNA damage checkpoint control protein RAD17
+Macromolecule #8: DDC1 isoform 1
+Macromolecule #9: Template strand
+Macromolecule #10: Primer strand 1
+Macromolecule #11: Primer strand 2
+Macromolecule #12: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
+Macromolecule #13: MAGNESIUM ION
+Macromolecule #14: ADENOSINE-5'-DIPHOSPHATE
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 7.5 |
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| Vitrification | Cryogen name: ETHANE |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 64.0 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: 1.9000000000000001 µm / Nominal defocus min: 1.3 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Keywords
Authors
United States, 3 items
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Processing
FIELD EMISSION GUN


