SUMO-1 Conjugation in Vivo Requires Both a Consensus Modification Motif and Nuclear Targeting
SUMO-1 is a small ubiquitin-related modifier that is covalently linked to many cellular protein targets. Proteins modified by SUMO-1 and the SUMO-1-activating and -conjugating enzymes are located predominantly in the nucleus. Here we define a transferable sequence containing the ΨK X E motif, where...
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Published in | The Journal of biological chemistry Vol. 276; no. 16; pp. 12654 - 12659 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
United States
American Society for Biochemistry and Molecular Biology
20.04.2001
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Subjects | |
Online Access | Get full text |
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Summary: | SUMO-1 is a small ubiquitin-related modifier that is covalently linked to many cellular protein targets. Proteins modified
by SUMO-1 and the SUMO-1-activating and -conjugating enzymes are located predominantly in the nucleus. Here we define a transferable
sequence containing the ΨK X E motif, where Ψ represents a large hydrophobic amino acid, that confers the ability to be SUMO-1-modified on proteins to
which it is linked. Whereas addition of short sequences from p53 and IκBα, containing the ΨK X E motif, to a carrier protein is sufficient for modification in vitro , modification in vivo requires the additional presence of a nuclear localization signal. Thus, protein substrates must be targeted to the nucleus
to undergo SUMO-1 conjugation. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0021-9258 1083-351X |
DOI: | 10.1074/jbc.M009476200 |