The ubiquitin-like modifier FAT10 interacts with HDAC6 and localizes to aggresomes under proteasome inhibition

Kalveram, Birte; Schmidtke, Gunter; Gröttrup, Marcus

The ubiquitin-like modifier FAT10 interacts with HDAC6 and localizes to aggresomes under proteasome inhibition

Dateien

Kalveram_opus-84999.pdfGröße: 1.37 MBDownloads: 360

Datum

2008

Autor:innen

Kalveram, Birte

Schmidtke, Gunter

Gröttrup, Marcus

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Biologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Journal of cell science. 2008, 121(24), pp. 4079-4088. ISSN 0021-9533. eISSN 1477-9137. Available under: doi: 10.1242/jcs.035006

Zusammenfassung

During misfolded-protein stress, the cytoplasmic protein histone deacetylase 6 (HDAC6) functions as a linker between the dynein motor and polyubiquitin to mediate the transport of polyubiquitylated cargo to the aggresome. Here, we identify a new binding partner of HDAC6, the ubiquitin-like modifier FAT10 (also known as UBD), which is cytokine-inducible and - similar to ubiquitin - serves as a signal for proteasomal degradation. In vivo, the two proteins only interacted under conditions of proteasome impairment. The binding of HDAC6 to FAT10 was mediated by two separate domains: the C-terminal ubiquitin-binding zinc-finger (BUZ domain) of HDAC6 and its first catalytic domain, even though catalytic activity of HDAC6 was not required for this interaction. Both endogenous and ectopically expressed FAT10 as well as the model conjugate FAT10-GFP localized to the aggresome in a microtubule-dependent manner. Furthermore, FAT10-containing as well as ubiquitin-containing aggresomes were reduced in both size and number in HDAC6-deficient fibroblasts. We conclude that, if FAT10 fails to subject its target proteins to proteasomal degradation, an alternative route is taken to ensure their sequestration and possibly also their subsequent removal by transporting them to the aggresome via the association with HDAC6.

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Zitieren

ISO 690

KALVERAM, Birte, Gunter SCHMIDTKE, Marcus GRÖTTRUP, 2008. The ubiquitin-like modifier FAT10 interacts with HDAC6 and localizes to aggresomes under proteasome inhibition. In: Journal of cell science. 2008, 121(24), pp. 4079-4088. ISSN 0021-9533. eISSN 1477-9137. Available under: doi: 10.1242/jcs.035006

BibTex

@article{Kalveram2008ubiqu-1208,
  year={2008},
  doi={10.1242/jcs.035006},
  title={The ubiquitin-like modifier FAT10 interacts with HDAC6 and localizes to aggresomes under proteasome inhibition},
  number={24},
  volume={121},
  issn={0021-9533},
  journal={Journal of cell science},
  pages={4079--4088},
  author={Kalveram, Birte and Schmidtke, Gunter and Gröttrup, Marcus}
}

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Universitätsbibliographie

Ja