Ataxia Telangiectasia Mutated (ATM) Kinase is a protein kinase enzyme that is found in humans and other organisms. This enzyme is involved in the regulation of cell cycle checkpoint control, DNA damage response, and regulation of transcription. It is also involved in the maintenance of genomic stability.
The ATM kinase is activated in response to double-strand DNA breaks (DSBs) and other forms of DNA damage. It is activated by phosphorylation of itself and other downstream targets, resulting in the cascade of cellular responses. The activation of ATM helps to coordinate the repair of DNA damage and maintain genomic stability.
The ATM kinase is involved in a number of cellular processes, including cell cycle control, DNA repair, transcriptional regulation, and apoptosis. It plays a role in the activation of the p53 tumor suppressor, cell cycle checkpoints, and DNA damage repair. It is also involved in the regulation of transcription factors such as NF-κB and p53, as well as other transcriptional networks.
In addition, the ATM kinase is involved in the control of oxidative stress, inflammation, and aging. It is a key enzyme in the maintenance of genomic stability and homeostasis, as well as the prevention of genomic instability and cancer. In summary, the ATM kinase is involved in the regulation of many cellular processes, including DNA damage repair, cell cycle checkpoint control, transcriptional regulation, and apoptosis. It is essential for maintaining genomic stability and protecting cells from damage and disease.