Results 11 to 20 of about 2,461,779 (300)

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

Structures of 9-1-1 DNA checkpoint clamp loading at gaps from start to finish and ramification on biology

open access: yesCell Reports, 2023
Summary: Rad24-RFC (replication factor C) loads the 9-1-1 checkpoint clamp onto the recessed 5′ ends by binding a 5′ DNA at an external surface site and threading the 3′ single-stranded DNA (ssDNA) into 9-1-1. We find here that Rad24-RFC loads 9-1-1 onto
Fengwei Zheng   +4 more
doaj   +1 more source

An advanced cell cycle tag toolbox reveals principles underlying temporal control of structure-selective nucleases

open access: yeseLife, 2020
Cell cycle tags allow to restrict target protein expression to specific cell cycle phases. Here, we present an advanced toolbox of cell cycle tag constructs in budding yeast with defined and compatible peak expression that allow comparison of protein ...
Julia Bittmann   +6 more
doaj   +1 more source

Reconstitution of a eukaryotic replisome reveals suppression mechanisms that define leading/lagging strand operation

open access: yeseLife, 2015
We have reconstituted a eukaryotic leading/lagging strand replisome comprising 31 distinct polypeptides. This study identifies a process unprecedented in bacterial replisomes.
Roxana E Georgescu   +7 more
doaj   +1 more source

Mechanisms of DNA replication [PDF]

open access: yesCurrent Opinion in Chemical Biology, 2000
Advances in recent years have led to exciting new ideas about the initiation, regulation and coordination of DNA replication. Structural studies have yielded fascinating glimpses of replisome action. In addition, the involvement of replication proteins in other cellular processes has blurred the lines between replication, repair and recombination.
M J, Davey, M, O'Donnell
openaire   +2 more sources

Molecular choreography of primer synthesis by the eukaryotic Pol α-primase

open access: yesNature Communications, 2023
The eukaryotic polymerase α (Pol α) synthesizes an RNA-DNA hybrid primer of 20–30 nucleotides. Pol α is composed of Pol1, Pol12, Primase 1 (Pri1), and Pri2. Pol1 and Pri1 contain the DNA polymerase and RNA primase activities, respectively.
Zuanning Yuan   +3 more
doaj   +1 more source

Robust Replication Control Is Generated by Temporal Gaps between Licensing and Firing Phases and Depends on Degradation of Firing Factor Sld2

open access: yesCell Reports, 2016
Temporal separation of DNA replication initiation into licensing and firing phases ensures the precise duplication of the genome during each cell cycle.
Karl-Uwe Reusswig   +3 more
doaj   +1 more source

DNA Replication Fidelity [PDF]

open access: yesAnnual Review of Biochemistry, 2000
▪ Abstract  DNA replication fidelity is a key determinant of genome stability and is central to the evolution of species and to the origins of human diseases. Here we review our current understanding of replication fidelity, with emphasis on structural and biochemical studies of DNA polymerases that provide new insights into the importance of hydrogen
T A, Kunkel, K, Bebenek
openaire   +2 more sources

Implementing fluorescence enhancement, quenching, and FRET for investigating flap endonuclease 1 enzymatic reaction at the single-molecule level

open access: yesComputational and Structural Biotechnology Journal, 2021
Flap endonuclease 1 (FEN1) is an important component of the intricate molecular machinery for DNA replication and repair. FEN1 is a structure-specific 5′ nuclease that cleaves nascent single-stranded 5′ flaps during the maturation of Okazaki fragments ...
Mohamed A. Sobhy   +5 more
doaj   +1 more source

Reversal of terminal differentiation and control of DNA replication [PDF]

open access: yes, 1993
DNA replication in mammalian cells occurs in discrete nuclear foci. Here we show that terminally differentiated myotubes can be induced to reenter S phase and show the same pattern of replication foci as cycling cells.
Cardoso, M. Cristina   +4 more
core   +2 more sources

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