,DNA

John Rouse1, Stephen P Jackson

  • 1The Wellcome Trust/Cancer Research UK Institute (of Cancer and Developmental Biology), University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, UK. jwr24@mole.bio.cam.ac.uk

Science (New York, N.Y.)
|July 27, 2002
PubMed
概括

基因组DNA损伤威胁到遗传完整性. 虽然DNA损伤信号和修复对于预防基因组不稳定性和癌症至关重要,但如何检测初始DNA损伤仍然不清楚.

相关概念视频

Mismatch Repair01:36

Mismatch Repair

Overview
Mismatch Repair01:36

Mismatch Repair

Overview
Fixing Double-strand Breaks02:04

Fixing Double-strand Breaks

The double-stranded structure of DNA has two major advantages. First, it serves as a safe repository of genetic information where one strand serves as the back-up in case the other strand is damaged. Second, the double-helical structure can be wrapped around proteins called histones to form nucleosomes, which can then be tightly wound to form chromosomes. This way, DNA chains up to 2 inches long can be contained within microscopic structures in a cell. A double-stranded break not only damages...
Base-pairing and DNA Repair02:27

Base-pairing and DNA Repair

Erwin Chargaff’s rules on DNA equivalence paved the way for the discovery of base pairing in DNA. Chargaff’s rules state that in a double-stranded DNA molecule,
Mismatch Repair01:20

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...
Fixing Double-strand Breaks02:04

Fixing Double-strand Breaks

The double-stranded structure of DNA has two major advantages. First, it serves as a safe repository of genetic information where one strand serves as the back-up in case the other strand is damaged. Second, the double-helical structure can be wrapped around proteins called histones to form nucleosomes, which can then be tightly wound to form chromosomes. This way, DNA chains up to 2 inches long can be contained within microscopic structures in a cell. A double-stranded break not only damages...