Inhibition of replication initiation of damaged DNA by RB1/E2F1 / maintenance of DNA repeat elements / Unwinding of DNA / replication fork arrest / regulation of nuclear cell cycle DNA replication / RNA-templated DNA biosynthetic process / DNA replication initiation / meiotic chromosome segregation / Processive synthesis on the lagging strand / MCM core complex ...Inhibition of replication initiation of damaged DNA by RB1/E2F1 / maintenance of DNA repeat elements / Unwinding of DNA / replication fork arrest / regulation of nuclear cell cycle DNA replication / RNA-templated DNA biosynthetic process / DNA replication initiation / meiotic chromosome segregation / Processive synthesis on the lagging strand / MCM core complex / Assembly of the pre-replicative complex / Switching of origins to a post-replicative state / MCM complex binding / Removal of the Flap Intermediate / GINS complex / DNA strand elongation involved in mitotic DNA replication / nuclear DNA replication / mitotic DNA replication preinitiation complex assembly / Polymerase switching / premeiotic DNA replication / pre-replicative complex assembly involved in nuclear cell cycle DNA replication / alpha DNA polymerase:primase complex / mitotic DNA replication / anaphase-promoting complex binding / Activation of the pre-replicative complex / CMG complex / establishment of mitotic sister chromatid cohesion / DNA replication checkpoint signaling / single-stranded 3'-5' DNA helicase activity / entrainment of circadian clock / nuclear pre-replicative complex / DNA primase activity / MCM complex / Activation of ATR in response to replication stress / DNA replication preinitiation complex / lagging strand elongation / DNA replication, synthesis of primer / replication fork protection complex / telomere capping / mitotic DNA replication checkpoint signaling / mitotic DNA replication initiation / double-strand break repair via break-induced replication / mitotic intra-S DNA damage checkpoint signaling / silent mating-type cassette heterochromatin formation / regulation of DNA-templated DNA replication initiation / single-stranded DNA helicase activity / mitotic sister chromatid cohesion / DNA strand elongation involved in DNA replication / DNA synthesis involved in DNA repair / DNA biosynthetic process / leading strand elongation / replication fork processing / DNA unwinding involved in DNA replication / nuclear replication fork / mitotic G2 DNA damage checkpoint signaling / 3'-5' DNA helicase activity / DNA replication origin binding / subtelomeric heterochromatin formation / DNA replication initiation / Ub-specific processing proteases / heterochromatin formation / telomere maintenance / nuclear periphery / helicase activity / meiotic cell cycle / replication fork / DNA-templated DNA replication / double-strand break repair / Transferases; Transferring phosphorus-containing groups; Nucleotidyltransferases / nuclear envelope / single-stranded DNA binding / 4 iron, 4 sulfur cluster binding / DNA replication / DNA helicase / chromosome, telomeric region / DNA-directed DNA polymerase / DNA-directed DNA polymerase activity / DNA repair / nucleotide binding / DNA damage response / chromatin binding / ATP hydrolysis activity / mitochondrion / DNA binding / nucleoplasm / ATP binding / nucleus / metal ion binding / cytoplasm / cytosol Similarity search - Function
DNA replication checkpoint mediator, MRC1 domain / MRC1-like domain / Claspin / Chromosome segregation in meiosis protein 3 / TIPIN/Csm3/Swi3 / Replication Fork Protection Component Swi3 / Timeless / Timeless, N-terminal / Timeless protein / DNA polymerase alpha subunit B N-terminal ...DNA replication checkpoint mediator, MRC1 domain / MRC1-like domain / Claspin / Chromosome segregation in meiosis protein 3 / TIPIN/Csm3/Swi3 / Replication Fork Protection Component Swi3 / Timeless / Timeless, N-terminal / Timeless protein / DNA polymerase alpha subunit B N-terminal / DNA polymerase alpha, subunit B, N-terminal / DNA polymerase alpha, subunit B / DNA primase, small subunit, eukaryotic/archaeal / DNA primase, large subunit, eukaryotic / DNA primase, small subunit / DNA primase small subunit / DNA primase large subunit, eukaryotic/archaeal / DNA polymerase alpha catalytic subunit, N-terminal domain / DNA polymerase alpha, zinc finger domain superfamily / Eukaryotic and archaeal DNA primase, large subunit / DNA Polymerase alpha zinc finger / DNA polymerase alpha subunit p180 N terminal / Zinc finger, DNA-directed DNA polymerase, family B, alpha / DNA polymerase alpha catalytic subunit, catalytic domain / CDC45 family / DNA replication complex GINS protein Psf2 / CDC45-like protein / GINS complex, subunit Psf1 / GINS complex, subunit Psf3 / GINS complex, subunit Psf3 superfamily / DNA replication complex GINS protein SLD5, C-terminal / GINS, helical bundle-like domain superfamily / GINS complex protein Sld5, alpha-helical domain / DNA replication complex GINS protein SLD5 C-terminus / GINS complex subunit Sld5 / GINS subunit, domain A / GINS complex protein helical bundle domain / MCM4, winged helix domain / DNA polymerase alpha/delta/epsilon, subunit B / DNA replication licensing factor Mcm5 / DNA polymerase alpha/epsilon subunit B / DNA replication licensing factor Mcm3 / Mini-chromosome maintenance complex protein 4 / DNA replication licensing factor Mcm6 / DNA replication licensing factor Mcm7 / Mcm6, C-terminal winged-helix domain / MCM6 C-terminal winged-helix domain / DNA replication licensing factor Mcm2 / Mini-chromosome maintenance protein 2 / Mini-chromosome maintenance, conserved site / MCM family signature. / MCM N-terminal domain / MCM N-terminal domain / MCM OB domain / MCM OB domain / Mini-chromosome maintenance protein / MCM, AAA-lid domain / MCM P-loop domain / MCM AAA-lid domain / MCM family domain profile. / minichromosome maintenance proteins / MCM domain / DNA polymerase family B, thumb domain / DNA polymerase family B signature. / DNA-directed DNA polymerase, family B, conserved site / DNA polymerase family B / DNA polymerase family B, exonuclease domain / DNA-directed DNA polymerase, family B, exonuclease domain / DNA-directed DNA polymerase, family B, multifunctional domain / DNA polymerase, palm domain superfamily / DNA polymerase type-B family / DNA-directed DNA polymerase, family B / Ribonuclease H superfamily / Ribonuclease H-like superfamily / Winged helix-like DNA-binding domain superfamily / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / Nucleic acid-binding, OB-fold / DNA/RNA polymerase superfamily / P-loop containing nucleoside triphosphate hydrolase Similarity search - Domain/homology
DNA primase small subunit / DNA polymerase alpha catalytic subunit A / DNA primase large subunit / DNA replication licensing factor MCM3 / Mediator of replication checkpoint protein 1 / DNA replication licensing factor MCM2 / Minichromosome maintenance protein 5 / DNA replication licensing factor MCM4 / DNA polymerase alpha subunit B / DNA replication licensing factor MCM7 ...DNA primase small subunit / DNA polymerase alpha catalytic subunit A / DNA primase large subunit / DNA replication licensing factor MCM3 / Mediator of replication checkpoint protein 1 / DNA replication licensing factor MCM2 / Minichromosome maintenance protein 5 / DNA replication licensing factor MCM4 / DNA polymerase alpha subunit B / DNA replication licensing factor MCM7 / DNA replication complex GINS protein PSF2 / DNA replication licensing factor MCM6 / Topoisomerase 1-associated factor 1 / DNA replication complex GINS protein SLD5 / Chromosome segregation in meiosis protein 3 / Cell division control protein 45 / DNA replication complex GINS protein PSF3 / DNA replication complex GINS protein PSF1 Similarity search - Component
Biological species
Saccharomyces cerevisiae (brewer's yeast)
Method
single particle reconstruction / cryo EM / Resolution: 4.6 Å
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.
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