Results 11 to 20 of about 106,156 (238)

The structure of ORC–Cdc6 on an origin DNA reveals the mechanism of ORC activation by the replication initiator Cdc6

open access: yesNature Communications, 2021
Eukaryotic DNA replication is mediated by many proteins which are tightly regulated for an efficient firing of replication at each cell cycle. Here the authors report a cryo-EM structure of the yeast ORC–Cdc6 bound to an 85-bp ARS1 origin DNA revealing ...
Xiang Feng   +5 more
doaj   +1 more source

An Essential and Cell-Cycle-Dependent ORC Dimerization Cycle Regulates Eukaryotic Chromosomal DNA Replication

open access: yesCell Reports, 2020
Summary: Eukaryotic DNA replication licensing is a prerequisite for, and plays a role in, regulating genome duplication that occurs exactly once per cell cycle.
Aftab Amin   +10 more
doaj   +1 more source

Coupling DNA Replication and Spindle Function in Saccharomyces cerevisiae

open access: yesCells, 2021
In the yeast Saccharomyces cerevisiae DNA replication and spindle assembly can overlap. Therefore, signaling mechanisms modulate spindle dynamics in order to ensure correct timing of chromosome segregation relative to genome duplication, especially when ...
Dimitris Liakopoulos
doaj   +1 more source

Affinity Purification of an Archaeal DNA Replication Protein Network

open access: yesmBio, 2010
Nineteen Thermococcus kodakarensis strains have been constructed, each of which synthesizes a different His6-tagged protein known or predicted to be a component of the archaeal DNA replication machinery.
Zhuo Li   +4 more
doaj   +1 more source

Identification of ORC1/CDC6-interacting factors in Trypanosoma brucei reveals critical features of origin recognition complex architecture.

open access: yesPLoS ONE, 2012
DNA replication initiates by formation of a pre-replication complex on sequences termed origins. In eukaryotes, the pre-replication complex is composed of the Origin Recognition Complex (ORC), Cdc6 and the MCM replicative helicase in conjunction with ...
Calvin Tiengwe   +7 more
doaj   +1 more source

Dynamics of the Eukaryotic Replicative Helicase at Lagging-Strand Protein Barriers Support the Steric Exclusion Model

open access: yesCell Reports, 2019
Summary: Progression of DNA replication depends on the ability of the replisome complex to overcome nucleoprotein barriers. During eukaryotic replication, the CMG helicase translocates along the leading-strand template and unwinds the DNA double helix ...
Hazal B. Kose   +3 more
doaj   +1 more source

TEX264 coordinates p97- and SPRTN-mediated resolution of topoisomerase 1-DNA adducts

open access: yesNature Communications, 2020
Eukaryotic topoisomerase 1 (TOP1) regulates DNA topology to ensure efficient DNA replication and transcription. Here, the authors reveal insights into the molecular resolution of topoisomerase 1-DNA adducts by TEX264, p97 and SPRTN.
John Fielden   +16 more
doaj   +1 more source

Global effects of DNA replication and DNA replication origin activity on eukaryotic gene expression

open access: yesMolecular Systems Biology, 2009
This report provides a global view of how gene expression is affected by DNA replication. We analyzed synchronized cultures of Saccharomyces cerevisiae under conditions that prevent DNA replication initiation without delaying cell cycle progression.
Larsson Omberg   +5 more
doaj   +1 more source

RETRACTED: The structure of SV40 large T hexameric helicase in complex with AT-rich origin DNA

open access: yeseLife, 2016
DNA replication is a fundamental biological process. The initial step in eukaryotic DNA replication is the assembly of the pre-initiation complex, including the formation of two head-to-head hexameric helicases around the replication origin.
Dahai Gai   +3 more
doaj   +1 more source

Structural Insight into the MCM double hexamer activation by Dbf4-Cdc7 kinase

open access: yesNature Communications, 2022
The Dbf4-dependent kinase Cdc7 (DDK) is essential for eukaryotic DNA replication. Here, the authors present a series of cryo-EM structures elucidating the versatility of this kinase in exerting an ordered phosphorylation of its essential target to ...
Jiaxuan Cheng   +6 more
doaj   +1 more source

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