ATR (Ataxia-telangiectasia and Rad3-related protein)

ATR (Ataxia-telangiectasia and Rad3-related protein) is a crucial protein in our cells that helps maintain DNA stability. When DNA gets damaged, ATR senses this damage and activates repair processes to fix it. This protein plays an essential role in cell cycle regulation, ensuring that cells do not divide with damaged DNA, which could lead to problems like cancer. ATR is part of the body's defense system against genomic instability, helping to protect our health by preserving the integrity of our genetic information. Its functions are vital for normal growth and development.