DNA Damage and Repair 906113 DNA Damage a

  • Slides: 19
Download presentation
DNA Damage and Repair 畜產四 杜佩玲 906113

DNA Damage and Repair 畜產四 杜佩玲 906113

DNA Damage a. single base changes 1. Deamination 2. Replication error b. structural distortions

DNA Damage a. single base changes 1. Deamination 2. Replication error b. structural distortions 1. Ultraviolet irradiation 2. Alkylation 3. Depurination

DNA repair n n n Direct repair Excision repair ☆Mismatch repair Recombination repair ☆SOS

DNA repair n n n Direct repair Excision repair ☆Mismatch repair Recombination repair ☆SOS system

討論 TYPE OF DAMAGE events/cell/day % of total daily damage Single-strand break 120, 000

討論 TYPE OF DAMAGE events/cell/day % of total daily damage Single-strand break 120, 000 50. 9 N 7 -Methyl. Guanine 84, 000 35. 6 Depurination 24, 000 10. 2 Oxidized DNA 2, 880 1. 2 Depyrimidation 1, 320 0. 5 Cytosine deamination 360 0. 2 Double-strand breaks 9 0. 01

參考文獻 n n Gene VII, Chapter 14, Oxford University Press 現代遺傳學, 第二十章, 藝軒出版

參考文獻 n n Gene VII, Chapter 14, Oxford University Press 現代遺傳學, 第二十章, 藝軒出版