Journal
NEW BIOTECHNOLOGY
Volume 38, Issue -, Pages 7-15Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nbt.2016.12.002
Keywords
MARCH E3 ligase; MARCH-1; Ubiquitination; MHC-II; GxxxG
Funding
- European Union [609020]
- Research Council of Norway (NFR) [221444]
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E3 ligases are critical checkpoints for protein ubiquitination, a signal that often results in protein sorting and degradation but has also been linked to regulation of transcription and DNA repair. In line with their key role in cellular trafficking and cell-cycle control, malfunction of E3 ligases is often linked to human disease. Thus, they have emerged as prime drug targets. However, the molecular basis of action of membrane-bound E3 ligases is still unknown. Here, we review the current knowledge on the membrane-embedded MARCH E3 ligases (MARCH-1-6,7,8,11) with a focus on how the transmembrane regions can contribute via GxxxG-motifs to the selection and recognition of other membrane proteins as substrates for ubiquitination. Further understanding of the molecular parameters that govern target protein recognition of MARCH E3 ligases will contribute to development of strategies for therapeutic regulation of MARCH-induced ubiquitination. (C) 2016 Elsevier B.V. All rights reserved.
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