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The metazoan origin recognition complex [PDF]
Regulated initiation of DNA replication relies on the firing of initiator proteins that bind specifically to origin DNA. The discovery of the first eukaryotic initiator, the Saccharomyces cerevisiae Origin Recognition Complex (ORC) has allowed us to discern some aspects of how the onset of replication is regulated.
D G, Quintana, A, Dutta
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The origin recognition complex protein family. [PDF]
Origin recognition complex (ORC) proteins were first discovered as a six-subunit assemblage in budding yeast that promotes the initiation of DNA replication. Orc1-5 appear to be present in all eukaryotes, and include both AAA+ and winged-helix motifs.
Duncker BP, Chesnokov IN, McConkey BJ.
europepmc +4 more sources
Origin recognition complex binding to a metazoan replication origin [PDF]
The initiation of DNA replication in eukaryotic cells at the onset of S phase requires the origin recognition complex (ORC) [1]. This six-subunit complex, first isolated in Saccharomyces cerevisiae [2], is evolutionarily conserved [1]. ORC participates in the formation of the prereplicative complex [3], which is necessary to establish replication ...
Bielinsky, Anja-Katrin +6 more
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Chromatin replication involves the assembly and activity of the replisome within the nucleosomal landscape. At the core of the replisome is the Mcm2-7 complex (MCM), which is loaded onto DNA after binding to the Origin Recognition Complex (ORC). In yeast,
Humberto Sánchez +5 more
doaj +1 more source
The remarkable gymnastics of ORC
As a cell prepares to divide, a molecular actor known as the Origin Recognition Complex makes intricate ATP-driven movements to recruit proteins required to duplicate DNA.
Bruce Stillman
doaj +1 more source
Identification of a Novel 81-kDa Component of the Xenopus Origin Recognition Complex [PDF]
The Xenopus origin recognition complex is essential for chromosomal DNA replication in cell-free extracts. We have immunopurified the Xenopus origin recognition complex with anti-Xorc2 antibodies and analyzed its composition and properties.
Carpenter, Phillip B. +1 more
core +1 more source
Architecture of the Human Origin Recognition Complex [PDF]
All the human homologs of the six subunits of Saccharomyces cerevisiae origin recognition complex have been reported so far. However, not much has been reported on the nature and the characteristics of the human origin recognition complex. In an attempt to purify recombinant human ORC from insect cells infected with baculoviruses expressing HsORC ...
S K, Dhar, L, Delmolino, A, Dutta
openaire +2 more sources
Mechanism of DNA Recognition at a Viral Replication Origin [PDF]
Recognition of the DNA origin by the Epstein-Barr nuclear antigen 1 (EBNA1) protein is the primary event in latentphase genome replication of the Epstein-Barr virus, a model for replication initiation in eukaryotes.
de Prat Gay, Gonzalo +3 more
core +1 more source
Assembly of the Human Origin Recognition Complex [PDF]
The six-subunit origin recognition complex (ORC) was originally identified in the yeast Saccharomyces cerevisiae. Yeast ORC binds specifically to origins of replication and serves as a platform for the assembly of additional initiation factors, such as Cdc6 and the Mcm proteins.
S, Vashee +3 more
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The dynamics of DNA replication factors is crucial for cell cycle progression. Arabidopsis encode two origin recognition complex 1 proteins, ORC1a and ORC1b, with distinct roles in DNA replication and deposition of heterochromatic H3K27me1, respectively.
Zaida Vergara +10 more
doaj +1 more source

