Definition: Protoeneis is a type of protein that is found in the nucleus of cells, where it serves as an essential component for maintaining cell structure and function. It consists of two identical subunits, which are linked by a coiled coil structure called a beta-sheet, with each subunit carrying one of four specific amino acids: Leucine, Isoleucine, Valine, or Leucine. Protoeneis is essential for protein folding and stability, as it facilitates the formation of