Orc6 tetherORC.

David Driscoll1,2, Larry J Friedman2,3, Jeff Gelles3

  • 1HHMI, Cambridge, MA 02139.

概括

原始识别复合体 (ORC) 使用Orc6在DNA复制启动过程中绑定Mcm2-7螺旋酶. 这种相互作用确保一个ORC有效地加载两个酶,防止其释放,并使细胞分裂成为可能.

相关概念视频

Replication in Eukaryotes01:29

Replication in Eukaryotes

In eukaryotic cells, DNA replication is highly conserved and tightly regulated. Multiple linear chromosomes must be duplicated with high fidelity before cell division, so there are many proteins that fulfill specialized roles in the replication process. Replication occurs in three phases: initiation, elongation, and termination, and ends with two complete sets of chromosomes in the nucleus.
Many Proteins Orchestrate Replication at the Origin
Eukaryotic replication follows many of the same...
17.1K
Replication in Eukaryotes02:31

Replication in Eukaryotes

Overview
203.2K
Restarting Stalled Replication Forks02:37

Restarting Stalled Replication Forks

DNA replication is initiated at sites containing predefined DNA sequences known as origins of replication. DNA is unwound at these sites by the minichromosome maintenance (MCM) helicase and other factors such as Cdc45 and the associated GINS complex.The unwound single strands are protected by replication protein A (RPA) until DNA polymerase starts synthesizing DNA at the 5’ end of the strand in the same direction as the replication fork. To prevent the replication fork from falling apart,...
6.3K
Restarting Stalled Replication Forks02:37

Restarting Stalled Replication Forks

2.3K
Replication in Prokaryotes01:32

Replication in Prokaryotes

DNA replication has three main steps: initiation, elongation, and termination. Replication in prokaryotes begins when initiator proteins bind to the single origin of replication (ori) on the cell's circular chromosome. Replication then proceeds around the entire circle of the chromosome in each direction from the two replication forks, resulting in two DNA molecules.
Many Proteins Work Together to Replicate the Chromosome
Replication is coordinated and carried out by a host of specialized...
27.5K
Replication in Prokaryotes02:35

Replication in Prokaryotes

Overview
96.8K