PBRM1 suppresses tumor growth as a novel p53 acetylation reader.

Abstract

The reader(s) for acetylated tumor antigen p53 remains elusive. Here, PBRM1 (polybromo-1) is identified as a reader for acetylated lysine382 on p53 through its bromodomain 4 (BD4). PBRM1 BD4 mutants fail to support p53 transcriptional activity and suppress tumor growth. Thus PBRM1 suppresses tumor growth through p53 in kidney cancer.