Answer
P53 is tumor antigen protein .
Explanation
This protein is isoform of tumor protein 53 and Trp53 . It is tumor suppressor protein .As it maintain conservation of genome by maintaining stability of genome. The gene p53 is mostly known as tumour suppressor gene . The 53 indicate the molecular weight of the protein which ix 53 kDa on SDS gel. It also activate DNA repair protein..
