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Tumour-associated mutations of PA-TM-RING ubiquitin ligases RNF167/RNF13 identify the PA domain as a determinant for endosomal localization
Umeå University, Faculty of Medicine, Department of Molecular Biology (Faculty of Medicine).
Umeå University, Faculty of Medicine, Department of Molecular Biology (Faculty of Medicine).
Umeå University, Faculty of Medicine, Department of Molecular Biology (Faculty of Medicine).
2014 (English)In: Biochemical Journal, ISSN 0264-6021, E-ISSN 1470-8728, Vol. 459, no 1, 27-36 p.Article in journal (Refereed) Published
Abstract [en]

Diverse cellular processes depend on endocytosis, intracellular vesicle trafficking, sorting and exocytosis, and processes that are regulated post-transcriptionally by modifications such as phosphorylation and ubiquitylation. The PA (protease-associated) domain E3 ligases, such as Godzilla(CG10277) in Drosophila melanogaster and RNF167 (RING finger protein 167) in humans, have been implicated in the regulation of cellular endosome trafficking. In the present study, we have characterized point mutations in the RING (really interesting new gene) domain of human RNF13 and RNF167, which have been identified in human tumour samples, that abrogate ubiquitin ligase activity as well as function. In the present study, we have also identified a functional role for the PA domain, which is required for endosomal localization of these proteins. Although the PA domain point mutations of RNF13 and RNF167 identified in human tumours are ligase active, the resultant mutant proteins are mislocalized within the cell. Thus the PA domain E3 ligases examined in the present study appear to require both E3 ligase activity as well as an intact PA domain to efficiently target and ubiquitylate their cellular substrates.

Place, publisher, year, edition, pages
2014. Vol. 459, no 1, 27-36 p.
Keyword [en]
E3 ubiquitin ligase, goliath, protease-associated (PA) domain, RING domain, RING finger protein 167 (RNF167)
National Category
Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy)
Identifiers
URN: urn:nbn:se:umu:diva-88385DOI: 10.1042/BJ20131067ISI: 000333718700003OAI: oai:DiVA.org:umu-88385DiVA: diva2:716015
Available from: 2014-05-07 Created: 2014-05-05 Last updated: 2017-12-05Bibliographically approved

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Yamazaki, YasuoPalmer, Ruth H.

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van Dijk, Jesper R.Yamazaki, YasuoPalmer, Ruth H.
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