Proteasomes

Proteasomes (Figure 20.10) are cytosolic particles involved in proteolytic digestion. The come in two sizes - 20S and 26S. Structurally the proteasome shows remarkable similrity to the GroEL chaperonin. Proteasomes degrade cytosolic proteins tagged with ubiquitin..

See also: Protein Turnover, Programmed Destruction of Proteins, Cathepsins, Calpains

INTERNET LINK: Structure of the Proteasome