+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-15924 | |||||||||
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Title | S. cerevisiae pol alpha - replisome complex | |||||||||
Map data | Pol alpha - replisome complex. Locally filtered | |||||||||
Sample |
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Keywords | Replication / helicase / polymerase / pol alpha / priming / replisome | |||||||||
Function / homology | Function and homology information Inhibition of replication initiation of damaged DNA by RB1/E2F1 / H3-H4 histone complex chaperone activity / maintenance of DNA repeat elements / Unwinding of DNA / replication fork arrest / regulation of nuclear cell cycle DNA replication / DNA replication initiation / meiotic chromosome segregation / RNA-templated DNA biosynthetic process / MCM core complex ...Inhibition of replication initiation of damaged DNA by RB1/E2F1 / H3-H4 histone complex chaperone activity / maintenance of DNA repeat elements / Unwinding of DNA / replication fork arrest / regulation of nuclear cell cycle DNA replication / DNA replication initiation / meiotic chromosome segregation / RNA-templated DNA biosynthetic process / MCM core complex / Assembly of the pre-replicative complex / Switching of origins to a post-replicative state / DNA strand elongation involved in mitotic DNA replication / MCM complex binding / Processive synthesis on the lagging strand / GINS complex / nuclear DNA replication / mitotic DNA replication preinitiation complex assembly / Removal of the Flap Intermediate / premeiotic DNA replication / Polymerase switching / pre-replicative complex assembly involved in nuclear cell cycle DNA replication / anaphase-promoting complex binding / mitotic DNA replication / alpha DNA polymerase:primase complex / Activation of the pre-replicative complex / CMG complex / nuclear pre-replicative complex / DNA replication checkpoint signaling / DNA primase activity / establishment of mitotic sister chromatid cohesion / Activation of ATR in response to replication stress / DNA replication preinitiation complex / MCM complex / primosome complex / telomere capping / DNA replication, synthesis of primer / mitotic DNA replication checkpoint signaling / lagging strand elongation / replication fork protection complex / double-strand break repair via break-induced replication / cellular response to osmotic stress / mitotic DNA replication initiation / single-stranded DNA helicase activity / mitotic intra-S DNA damage checkpoint signaling / silent mating-type cassette heterochromatin formation / regulation of DNA-templated DNA replication initiation / DNA strand elongation involved in DNA replication / mitotic sister chromatid cohesion / DNA synthesis involved in DNA repair / DNA biosynthetic process / leading strand elongation / DNA unwinding involved in DNA replication / replication fork processing / nuclear replication fork / mitotic G2 DNA damage checkpoint signaling / DNA replication origin binding / DNA replication initiation / subtelomeric heterochromatin formation / Ub-specific processing proteases / DNA helicase activity / telomere maintenance / nuclear periphery / replication fork / meiotic cell cycle / helicase activity / transcription elongation by RNA polymerase II / heterochromatin formation / DNA-templated DNA replication / Transferases; Transferring phosphorus-containing groups; Nucleotidyltransferases / double-strand break repair / nuclear envelope / single-stranded DNA binding / 4 iron, 4 sulfur cluster binding / DNA helicase / DNA replication / DNA-directed DNA polymerase / chromosome, telomeric region / DNA-directed DNA polymerase activity / protein stabilization / DNA repair / nucleotide binding / DNA damage response / chromatin binding / ATP hydrolysis activity / mitochondrion / DNA binding / nucleoplasm / ATP binding / nucleus / metal ion binding / cytosol / cytoplasm Similarity search - Function | |||||||||
Biological species | Saccharomyces cerevisiae (brewer's yeast) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 4.6 Å | |||||||||
Authors | Jones ML / Yeeles JTP | |||||||||
Funding support | United Kingdom, 1 items
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Citation | Journal: Mol Cell / Year: 2023 Title: How Pol α-primase is targeted to replisomes to prime eukaryotic DNA replication. Authors: Morgan L Jones / Valentina Aria / Yasemin Baris / Joseph T P Yeeles / Abstract: During eukaryotic DNA replication, Pol α-primase generates primers at replication origins to start leading-strand synthesis and every few hundred nucleotides during discontinuous lagging-strand ...During eukaryotic DNA replication, Pol α-primase generates primers at replication origins to start leading-strand synthesis and every few hundred nucleotides during discontinuous lagging-strand replication. How Pol α-primase is targeted to replication forks to prime DNA synthesis is not fully understood. Here, by determining cryoelectron microscopy (cryo-EM) structures of budding yeast and human replisomes containing Pol α-primase, we reveal a conserved mechanism for the coordination of priming by the replisome. Pol α-primase binds directly to the leading edge of the CMG (CDC45-MCM-GINS) replicative helicase via a complex interaction network. The non-catalytic PRIM2/Pri2 subunit forms two interfaces with CMG that are critical for in vitro DNA replication and yeast cell growth. These interactions position the primase catalytic subunit PRIM1/Pri1 directly above the exit channel for lagging-strand template single-stranded DNA (ssDNA), revealing why priming occurs efficiently only on the lagging-strand template and elucidating a mechanism for Pol α-primase to overcome competition from RPA to initiate primer synthesis. | |||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_15924.map.gz | 1.4 MB | EMDB map data format | |
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Header (meta data) | emd-15924-v30.xml emd-15924.xml | 51.4 KB 51.4 KB | Display Display | EMDB header |
Images | emd_15924.png | 104.9 KB | ||
Others | emd_15924_additional_1.map.gz emd_15924_additional_2.map.gz emd_15924_half_map_1.map.gz emd_15924_half_map_2.map.gz | 20.7 MB 38.2 MB 37.7 MB 37.7 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-15924 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-15924 | HTTPS FTP |
-Validation report
Summary document | emd_15924_validation.pdf.gz | 723.6 KB | Display | EMDB validaton report |
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Full document | emd_15924_full_validation.pdf.gz | 723.1 KB | Display | |
Data in XML | emd_15924_validation.xml.gz | 11.2 KB | Display | |
Data in CIF | emd_15924_validation.cif.gz | 12.9 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-15924 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-15924 | HTTPS FTP |
-Related structure data
Related structure data | 8b9cMC 8b9aC 8b9bC 8b9dC M: atomic model generated by this map C: citing same article (ref.) |
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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_15924.map.gz / Format: CCP4 / Size: 40.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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Annotation | Pol alpha - replisome complex. Locally filtered | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 2.2673 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Additional map: #2
File | emd_15924_additional_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Additional map: #1
File | emd_15924_additional_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: Half map A
File | emd_15924_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_15924_half_map_2.map | ||||||||||||
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Annotation | Half map B | ||||||||||||
Projections & Slices |
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Density Histograms |
-Sample components
+Entire : S. cerevisiae replisome - pol alpha primase complex
+Supramolecule #1: S. cerevisiae replisome - pol alpha primase complex
+Macromolecule #1: DNA replication licensing factor MCM2
+Macromolecule #2: DNA replication licensing factor MCM3
+Macromolecule #3: DNA replication licensing factor MCM4
+Macromolecule #4: Minichromosome maintenance protein 5
+Macromolecule #5: DNA replication licensing factor MCM6
+Macromolecule #6: DNA replication licensing factor MCM7
+Macromolecule #7: DNA primase large subunit
+Macromolecule #8: DNA polymerase alpha subunit B
+Macromolecule #9: DNA replication complex GINS protein PSF1
+Macromolecule #10: DNA replication complex GINS protein PSF2
+Macromolecule #11: DNA replication complex GINS protein PSF3
+Macromolecule #12: DNA replication complex GINS protein SLD5
+Macromolecule #13: Cell division control protein 45
+Macromolecule #14: Mediator of replication checkpoint protein 1
+Macromolecule #17: DNA primase small subunit
+Macromolecule #18: Topoisomerase 1-associated factor 1
+Macromolecule #19: Chromosome segregation in meiosis protein 3
+Macromolecule #20: DNA polymerase alpha catalytic subunit A
+Macromolecule #15: Leading strand
+Macromolecule #16: Lagging strand
+Macromolecule #21: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
+Macromolecule #22: MAGNESIUM ION
+Macromolecule #23: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.6 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 39.2 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: 3.5 µm / Nominal defocus min: 1.5 µm |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Startup model | Type of model: INSILICO MODEL |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 4.6 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 53964 |
Initial angle assignment | Type: ANGULAR RECONSTITUTION |
Final angle assignment | Type: ANGULAR RECONSTITUTION |