関連する実験動画
Updated: Aug 17, 2026

14:09
Genetic Studies of Human DNA Repair Proteins Using Yeast as a Model System
Published on: March 18, 2010
トポイソメラーゼは,ヒトの疾患におけるトポイソメラーゼである
1University Department of Clinical Oncology and Radiotherapeutics, Addenbrooke's Hospital, Cambridge.
Lancet (London, England)
|March 5, 1988
まとめ
DNAを改変する酵素であるトポアイソメラーゼは,医学において極めて重要です. 彼らは薬物の標的であり,遺伝疾患に関与しており,臨床操作のための戦略が議論されています.
科学分野:
- バイオケミストリーと分子生物学
- 酵素学 酵素学とは
- クリニカル・メディシン 臨床医学
背景:
- トポアイソメラーゼは,DNAを修飾する必須酵素である.
- その臨床的意義は急速に高まっています.
- それらは,抗生物質,抗腫瘍薬の開発,遺伝的疾患における役割を担っています.
研究 の 目的:
- トポイソメラーゼの臨床的重要性を議論する.
- 臨床環境におけるトポイソメラーゼを操作するための戦略をレビューする.
- 疾患の病原性および治療におけるトポイソメラーゼの役割を強調する.
主な方法:
- トポイソメラーゼ機能と臨床応用に関する文献レビュー.
- 治療標的としてのトポイソメラーゼの分析.
- 遺伝疾患の関連性についての議論.
主要な成果:
- トポアイソメラーゼは,抗生物質と抗腫瘍剤の有効な標的である.
- トポイソメラーゼの臨床操作戦略は活発に開発されています.
- トポイソメラーゼは,様々な遺伝疾患の病原性に関与しています.
結論:
- トポアイソメラーゼは,臨床的重要性を拡大する重要な酵素のクラスです.
- トポイソメラーゼを標的にすることは,感染症,がん,遺伝疾患に対する有望な治療法を提供します.
- トポイソメラーゼ操作に関するさらなる研究は,臨床的進歩のために正当化されています.
関連する概念動画
Mismatch Repair
Overview
DNA Helicases
DNA unwinding helicase enzymes are a type of motor protein. Motor proteins can translocate along filaments or polymers using energy generated from ATP hydrolysis. Helicases are involved in all the important cellular processes where DNA unwinding is required, such as DNA replication, repair, recombination, and transcription. They are present in all living organisms, but vary in their structure, function, and mechanism of action. For example, in prokaryotes, DnaB helicase binds and translocates...
DNA Topoisomerases
Topoisomerases are enzymes that relax overwound DNA molecules during various cell processes, including DNA replication and transcription. These enzymes regulate positive and negative DNA supercoiling without changing the nucleotide sequence. DNA overwinding in a clockwise direction results in positively supercoiled DNA, whereas underwinding in a counterclockwise direction produces negatively supercoiled DNA.
Types and Mechanism of action
Topoisomerases are divided into two main types. Type I...
Types and Mechanism of action
Topoisomerases are divided into two main types. Type I...
Conservative Site-specific Recombination and Phase Variation
Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
The recognition sites for Cre recombinase called LoxP...
Genome Copying Errors
DNA replication is a well-evolved process that copies millions of base pairs with high fidelity during each cell division. Occasionally a wrong base or a long stretch of wrong bases may get added to the daughter strands. If the errors are left unchecked, cells might accumulate several mutations that might endanger their survival. Therefore, the copying errors are checked and repaired at three levels.
Mismatch Repair
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...

