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ESCRT ubiquitin-binding domains function cooperatively during MVB cargo sorting
Journal article   Open access   Peer reviewed

ESCRT ubiquitin-binding domains function cooperatively during MVB cargo sorting

S. Brookhart Shields, Andrea J. Oestreich, Stanley Winistorfer, Doris Nguyen, Johanna A. Payne, David J. Katzmann and Robert Piper
The Journal of cell biology, Vol.185(2), pp.213-224
04/20/2009
DOI: 10.1083/jcb.200811130
PMCID: PMC2700381
PMID: 19380877
url
https://doi.org/10.1083/jcb.200811130View
Published (Version of record) Open Access

Abstract

Ubiquitin (Ub) sorting receptors facilitate the targeting of ubiquitinated membrane proteins into multivesicular bodies (MVBs). Ub-binding domains (UBDs) have been described in several endosomal sorting complexes required for transport (ESCRT). Using available structural information, we have investigated the role of the multiple UBDs within ESCRTs during MVB cargo selection. We found a novel UBD within ESCRT-I and show that it contributes to MVB sorting in concert with the known UBDs within the ESCRT complexes. These experiments reveal an unexpected level of coordination among the ESCRT UBDs, suggesting that they collectively recognize a diverse set of cargo rather than act sequentially at discrete steps.
Cell Biology Life Sciences & Biomedicine Science & Technology

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