Sterol uptake by the NPC system in eukaryotes: a Saccharomyces cerevisiae perspective

Mikael B.L. Winkler, Lynette Nel, Kelly M. Frain, Emil Dedic, Esben Olesen, Bjørn Panyella Pedersen*

*Corresponding author af dette arbejde

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Abstract

Sterols are an essential component of membranes in all eukaryotic cells and the precursor of multiple indispensable cellular metabolites. After endocytotic uptake, sterols are integrated into the lysosomal membrane by the Niemann-Pick type C (NPC) system before redistribution to other membranes. The process is driven by two proteins that, together, compose the NPC system: the lysosomal sterol shuttle protein NPC2 and the membrane protein NPC1 (named NCR1 in fungi), which integrates sterols into the lysosomal membrane. The Saccharomyces cerevisiae NPC system provides a compelling model to study the molecular mechanism of sterol integration into membranes and sterol homeostasis. This review summarizes recent advances in the field, and by interpreting available structural data, we propose a unifying conceptual model for sterol loading, transfer and transport by NPC proteins.

OriginalsprogEngelsk
TidsskriftFEBS Letters
Vol/bind596
Nummer2
Sider (fra-til)160-179
Antal sider20
ISSN0014-5793
DOI
StatusUdgivet - jan. 2022

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