DNA EXCISION Meaning and
Definition
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DNA excision refers to a biological process that involves the removal or deletion of a specific segment of DNA from the genetic material of an organism. It is a fundamental mechanism that plays a crucial role in maintaining the stability and integrity of the genome. The process of DNA excision is typically carried out by specialized enzymes known as DNA excision repair enzymes.
One well-known example of DNA excision is nucleotide excision repair (NER), which specifically targets and removes DNA lesions caused by various forms of damage, such as ultraviolet (UV) radiation or chemical mutagens. In this process, a complex network of proteins recognizes the damaged DNA region and cuts the strand containing the lesion on both sides. The damaged segment is then excised, leaving a gap in the DNA molecule, which is later filled in and sealed by DNA synthesis and ligation, respectively.
DNA excision repair serves as a critical defense mechanism against DNA damage, preventing the accumulation of harmful mutations and maintaining the stability of the genetic information. Failure or defects in DNA excision repair mechanisms can lead to various genetic disorders, including cancer predisposition syndromes.
In summary, DNA excision refers to the removal or deletion of a damaged or unwanted segment of DNA from the genome, generally mediated by specialized DNA repair enzymes. It is an essential process for maintaining genetic stability and preventing the onset of genetic disorders.
Common Misspellings for DNA EXCISION
- sna excision
- xna excision
- cna excision
- fna excision
- rna excision
- ena excision
- dba excision
- dma excision
- dja excision
- dha excision
- dnz excision
- dns excision
- dnw excision
- dnq excision
- dna wxcision
- dna sxcision
- dna dxcision
- dna rxcision
- dna 4xcision
- dna 3xcision
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