Lipid scrambling is a general feature of protein insertases
D Li, C Rocha-Roa, MA Schilling… - Proceedings of the …, 2024 - National Acad Sciences
Glycerophospholipids are synthesized primarily in the cytosolic leaflet of the endoplasmic
reticulum (ER) membrane and must be equilibrated between bilayer leaflets to allow the ER …
reticulum (ER) membrane and must be equilibrated between bilayer leaflets to allow the ER …
Insertases scramble lipids: molecular simulations of MTCH2
Scramblases play a pivotal role in facilitating bidirectional lipid transport across cell
membranes, thereby influencing lipid metabolism, membrane homeostasis, and cellular …
membranes, thereby influencing lipid metabolism, membrane homeostasis, and cellular …
Lipid somersaults: Uncovering the mechanisms of protein-mediated lipid flipping
TG Pomorski, AK Menon - Progress in lipid research, 2016 - Elsevier
Membrane lipids diffuse rapidly in the plane of the membrane but their ability to flip
spontaneously across a membrane bilayer is hampered by a significant energy barrier. Thus …
spontaneously across a membrane bilayer is hampered by a significant energy barrier. Thus …
TMEM41B acts as an ER scramblase required for lipoprotein biogenesis and lipid homeostasis
D Huang, B Xu, LU Liu, L Wu, Y Zhu, A Ghanbarpour… - Cell metabolism, 2021 - cell.com
How amphipathic phospholipids are shuttled between the membrane bilayer remains an
essential but elusive process, particularly at the endoplasmic reticulum (ER). One prominent …
essential but elusive process, particularly at the endoplasmic reticulum (ER). One prominent …
On the molecular mechanism of flippase-and scramblase-mediated phospholipid transport
Phospholipid flippases are key regulators of transbilayer lipid asymmetry in eukaryotic cell
membranes, critical to many trafficking and signaling pathways. P4-ATPases, in particular …
membranes, critical to many trafficking and signaling pathways. P4-ATPases, in particular …
The ER membrane protein complex is a transmembrane domain insertase
A Guna, N Volkmar, JC Christianson, RS Hegde - Science, 2018 - science.org
Insertion of proteins into membranes is an essential cellular process. The extensive
biophysical and topological diversity of membrane proteins necessitates multiple insertion …
biophysical and topological diversity of membrane proteins necessitates multiple insertion …
Structural basis for membrane insertion by the human ER membrane protein complex
A defining step in the biogenesis of a membrane protein is the insertion of its hydrophobic
transmembrane helices into the lipid bilayer. The nine-subunit endoplasmic reticulum (ER) …
transmembrane helices into the lipid bilayer. The nine-subunit endoplasmic reticulum (ER) …
Out-of-the-groove transport of lipids by TMEM16 and GPCR scramblases
Phospholipid scramblases externalize phosphatidylserine to facilitate numerous
physiological processes. Several members of the structurally unrelated TMEM16 and G …
physiological processes. Several members of the structurally unrelated TMEM16 and G …
Membrane insertases at a glance
B Kizmaz, JM Herrmann - Journal of Cell Science, 2023 - journals.biologists.com
Protein translocases, such as the bacterial SecY complex, the Sec61 complex of the
endoplasmic reticulum (ER) and the mitochondrial translocases, facilitate the transport of …
endoplasmic reticulum (ER) and the mitochondrial translocases, facilitate the transport of …
Atg9 is a lipid scramblase that mediates autophagosomal membrane expansion
The molecular function of Atg9, the sole transmembrane protein in the autophagosome-
forming machinery, remains unknown. Atg9 colocalizes with Atg2 at the expanding edge of …
forming machinery, remains unknown. Atg9 colocalizes with Atg2 at the expanding edge of …