A CAT tail might tag an incomplete peptide as a target that should be destroyed. It might also signal that although synthesis has stalled, the ribosome’s basic machinery is intact, and that ribosome ...

Ribosomes are the sites in a cell in which protein synthesis takes place. Cells have many ribosomes, and the exact number depends on how active a particular cell is in synthesizing proteins.

Ribosomes are composed of two subunits, the small and large subunits, each containing specific rRNA molecules. The main types of rRNA include: Small Subunit rRNA: In prokaryotes, the small subunit ...