Damage of ionizing radiation and DNA repair gene

DNA damage after exposure to ionizing radiation has a direct effect on DNA replication, transcription and protein synthesis.Further, heredity, development and metabolism of the cells can be affected.DNA damage was an importance factor for mutation of cells, furthermore, carcinogen can be caused by severe mutation.However, there is a DNA repair system in the organism, and especially DNA repair gene plays an important role for DNA damage.This review will briefly present DNA re-pair gene and its function.