Abstract
The UBA domain is a motif found in a variety of proteins, some of which are associated with the ubiquitin-proteasome system. We describe the isolation of a fission-yeast gene, mud1+, which encodes a UBA domain containing protein that is able to bind multi-ubiquitin chains. We show that the UBA domain is responsible for this activity. Two other proteins containing this motif, the fission-yeast homologues of Rad23 and Dsk2, are also shown to bind multi-ubiquitin chains via their UBA domains. These two proteins are implicated, along with the fission-yeast Pus1(S5a/Rpn10) subunit of the 26 S proteasome, in the recognition and turnover of substrates by this proteolytic complex.
Original language | English |
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Journal | Nature Cell Biology |
Volume | 3 |
Issue number | 10 |
Pages (from-to) | 939-43 |
Number of pages | 4 |
ISSN | 1465-7392 |
DOIs | |
Publication status | Published - 2001 |