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関連する概念動画

Replication in Eukaryotes02:31

Replication in Eukaryotes

Overview
Chromosome Structure02:40

Chromosome Structure

A functional eukaryotic chromosome must contain three elements: a centromere, telomeres, and numerous origins of replication.
The centromere is a DNA sequence that links sister chromatids. This is also where kinetochores, protein complexes to which spindle microtubules attach, are constructed after the chromosome is replicated. The kinetochores allow the spindle microtubules to move the chromosomes within the cell during cell division.
Telomeres consist of non-coding repetitive nucleotide...
Chromosome Replication02:31

Chromosome Replication

Before a cell can divide, it must accurately replicate all of its chromosomes, including the DNA and its associated histone and non-histone proteins.  This process begins at numerous origins of replication during the S phase of the cell cycle in each of a cell’s chromosomes simultaneously. Certain nucleotides can act as origins of replication, but these sequences are not well defined - especially in complex, multi-cellular, eukaryotic species. The length of DNA that spans an origin of...
Replication in Eukaryotes02:31

Replication in Eukaryotes

Overview
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...
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...

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関連する実験動画

Updated: Jul 17, 2026

G2-seq: A High Throughput Sequencing-based Technique for Identifying Late Replicating Regions of the Genome
06:40

G2-seq: A High Throughput Sequencing-based Technique for Identifying Late Replicating Regions of the Genome

Published on: March 22, 2018

DNA複製の酵母染色体起源は,複数の機能的要素によって定義される.

Y Marahrens1, B Stillman

  • 1Cold Spring Harbor Laboratory, NY 11724.

Science (New York, N.Y.)
|February 14, 1992
PubMed
まとめ

研究者らは,Saccharomyces cerevisiaeにおける真核DNA複製の起源に不可欠なDNAの重要な要素を特定した. これらの要素は,プロモーター組織と同様に,機能するために転写活性化剤を必要とします.

科学分野:

  • 分子生物学は分子生物学である.
  • 遺伝学 遺伝学とは
  • バイオケミストリー バイオケミストリー

背景:

  • ユカリオットDNAの複製は,染色体上の離散的な起源から始まります.
  • これらの起源の正確な組織と機能的要素は完全に理解されていません.

研究 の 目的:

  • ユカリオットの染色体複製の起源の詳細な組織と重要な構成要素を解明する.
  • 起源機能における特定のDNA要素と転写因子の役割を調査する.

主な方法:

  • Saccharomyces cerevisiae ARS1の起源におけるリンカー置換変異体の構造と機能分析.
  • 必須DNA要素 (A,B1,B2,B3) の特徴と,その配列について.
  • ABF1結合部位 (B3) と転写活性化剤の役割に関する調査.

主要な成果:

  • ARS1の起源関数の4つの必須要素 (A,B1,B2,B3) を特定しました.
  • これらの要素が正しく配置された場合,無関係なシーケンスでも効率的に機能することを実証しました.
  • B3要素がABF1結合部位であり,転写活性化剤が必要であることを示した.

結論:

さらに関連する動画

Determination of S-Phase Duration Using 5-Ethynyl-2'-deoxyuridine Incorporation in Saccharomyces cerevisiae
08:40

Determination of S-Phase Duration Using 5-Ethynyl-2'-deoxyuridine Incorporation in Saccharomyces cerevisiae

Published on: October 21, 2022

Electrophoretic Analysis of Replication Through Structure-Prone DNA Repeats Within the SV40-Based Human Episome
05:22

Electrophoretic Analysis of Replication Through Structure-Prone DNA Repeats Within the SV40-Based Human Episome

Published on: September 13, 2024

関連する実験動画

Last Updated: Jul 17, 2026

G2-seq: A High Throughput Sequencing-based Technique for Identifying Late Replicating Regions of the Genome
06:40

G2-seq: A High Throughput Sequencing-based Technique for Identifying Late Replicating Regions of the Genome

Published on: March 22, 2018

Determination of S-Phase Duration Using 5-Ethynyl-2'-deoxyuridine Incorporation in Saccharomyces cerevisiae
08:40

Determination of S-Phase Duration Using 5-Ethynyl-2'-deoxyuridine Incorporation in Saccharomyces cerevisiae

Published on: October 21, 2022

Electrophoretic Analysis of Replication Through Structure-Prone DNA Repeats Within the SV40-Based Human Episome
05:22

Electrophoretic Analysis of Replication Through Structure-Prone DNA Repeats Within the SV40-Based Human Episome

Published on: September 13, 2024

  • ユーカリオットの染色体複製の起源は,多部分構造である.
  • 複製起源の機能は,DNA要素と転写活性化剤を含む真核のプロモーター組織と類似性を共有しています.