誤りやすいDNAポリメラーゼ:新しい構造と不貞の利点
E C Friedberg1, P L Fischhaber, C Kisker
1Laboratory of Molecular Pathology, Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. errol.friedberg@utsouthwestern.edu
Cell
|October 12, 2001
まとめ
新しく発見された,誤差に弱いDNAポリメラーゼは,その低信頼性を説明する新しい構造を持っています. これらの酵素は,複製中のDNA塩基損傷を回避するために不可欠です.
科学分野:
- 分子生物学は分子生物学である.
- バイオケミストリー バイオケミストリー
- 遺伝学 遺伝学とは
背景:
- DNAポリメラーゼは,DNA複製と修復に不可欠である.
- いくつかのDNAポリメラーゼは,トランスレション合成に不可欠な,誤りやすい活性を示します.
- 転移合成は,DNAの損傷を過ぎて複製を進めることを可能にします.
さらに関連する動画
11:08Proofreading and DNA Repair Assay Using Single Nucleotide Extension and MALDI-TOF Mass Spectrometry Analysis
Published on: June 19, 2018
10.3K
07:38DNA Polymerase Activity Assay Using Near-infrared Fluorescent Labeled DNA Visualized by Acrylamide Gel Electrophoresis
Published on: October 6, 2017
14.7K
関連する概念動画
Proofreading
9.9K
Synthesis of new DNA molecules is carried out by the enzyme DNA polymerase, which adds nucleotides on the daughter strand complementary to the template DNA strand. DNA polymerase has a higher affinity to add the correct base and ensures fidelity during DNA replication. Furthermore, it exhibits proofreading activity during replication, using an exonuclease domain that cuts off incorrect nucleotides from the nascent DNA strand.
Errors During Replication are Corrected by the DNA Polymerase...
Errors During Replication are Corrected by the DNA Polymerase...
9.9K
Proofreading
62.1K
Overview
62.1K
Translesion DNA Polymerases
11.8K
Translesion (TLS) polymerases rescue stalled DNA polymerases at sites of damaged bases by replacing the replicative polymerase and installing a nucleotide across the damaged site. Doing so, TLS allows additional time for the cell to repair the damage before resuming regular DNA replication.
TLS polymerases are found in all three domains of life - archaea, bacteria, and eukaryotes. Of the different classes of TLS polymerases, members of the Y family are fitted with specialized structures that...
TLS polymerases are found in all three domains of life - archaea, bacteria, and eukaryotes. Of the different classes of TLS polymerases, members of the Y family are fitted with specialized structures that...
11.8K
Mismatch Repair
45.1K
Overview
45.1K
Mismatch Repair
7.0K
Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
7.0K
Mismatch Repair
12.9K
No description available
12.9K
