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Nature Cell Biology 3, E232–E233 (1 October 2001) | doi:10.1038/ncb1001-e232

Ubiquitination, proteasomes and GABAA receptors

Bernhard L|[uuml]|scher & Cheryl A. Keller

Ubiquitination of plasma membrane proteins such as growth-factor receptors and ion channels is generally thought to act as a signal for endocytosis of these proteins. Ubiquitin might also act as a sorting signal in early endosomes and mark receptors for degradation by the lysosomal and proteasomal pathways.