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Nature. 1989 Mar 30;338(6214):394-401.

The tails of ubiquitin precursors are ribosomal proteins whose fusion to ubiquitin facilitates ribosome biogenesis.

Author information

1
Department of Cellular and Molecular Physiology, Harvard Medical School, Boston, Massachusetts 02115.

Abstract

Three of the four yeast ubiquitin genes encode hybrid proteins which are cleaved to yield ubiquitin and previously unidentified ribosomal proteins. The transient association between ubiquitin and these proteins promotes their incorporation into nascent ribosomes and is required for efficient ribosome biogenesis. These results suggest a novel 'chaperone' function for ubiquitin, in which its covalent association with other proteins promotes the formation of specific cellular structures.

PMID:
2538753
DOI:
10.1038/338394a0
[Indexed for MEDLINE]

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