Insertases scramble lipids: molecular simulations of MTCH2

L Bartoš, AK Menon, R Vácha - Structure, 2024 - cell.com
Scramblases play a pivotal role in facilitating bidirectional lipid transport across cell
membranes, thereby influencing lipid metabolism, membrane homeostasis, and cellular …

Phospholipids are imported into mitochondria by VDAC, a dimeric beta barrel scramblase

H Jahn, L Bartoš, GI Dearden, JS Dittman… - Nature …, 2023 - nature.com
Mitochondria are double-membrane-bounded organelles that depend critically on
phospholipids supplied by the endoplasmic reticulum. These lipids must cross the outer …

Membrane lipids are both the substrates and a mechanistically responsive environment of TMEM16 scramblase proteins

G Khelashvili, X Cheng, ME Falzone… - Journal of …, 2020 - Wiley Online Library
Recent discoveries about functional mechanisms of proteins in the TMEM16 family of
phospholipid scramblases have illuminated the dual role of the membrane as both the …

Stepwise activation mechanism of the scramblase nhTMEM16 revealed by cryo-EM

V Kalienkova, V Clerico Mosina, L Bryner… - Elife, 2019 - elifesciences.org
Scramblases catalyze the movement of lipids between both leaflets of a bilayer. Whereas
the X-ray structure of the protein nhTMEM16 has previously revealed the architecture of a …

The allosteric mechanism leading to an open-groove lipid conductive state of the TMEM16F scramblase

G Khelashvili, E Kots, X Cheng, MV Levine… - Communications …, 2022 - nature.com
TMEM16F is a Ca2+-activated phospholipid scramblase in the TMEM16 family of membrane
proteins. Unlike other TMEM16s exhibiting a membrane-exposed hydrophilic groove that …

Atomistic insight into lipid translocation by a TMEM16 scramblase

NP Bethel, M Grabe - … of the National Academy of Sciences, 2016 - National Acad Sciences
The transmembrane protein 16 (TMEM16) family of membrane proteins includes both lipid
scramblases and ion channels involved in olfaction, nociception, and blood coagulation …

Lipids and ions traverse the membrane by the same physical pathway in the nhTMEM16 scramblase

T Jiang, K Yu, HC Hartzell, E Tajkhorshid - Elife, 2017 - elifesciences.org
From bacteria to mammals, different phospholipid species are segregated between the inner
and outer leaflets of the plasma membrane by ATP-dependent lipid transporters. Disruption …

The structural basis of lipid scrambling and inactivation in the endoplasmic reticulum scramblase TMEM16K

SR Bushell, ACW Pike, ME Falzone… - Nature …, 2019 - nature.com
Membranes in cells have defined distributions of lipids in each leaflet, controlled by lipid
scramblases and flip/floppases. However, for some intracellular membranes such as the …

Gating mechanism of the extracellular entry to the lipid pathway in a TMEM16 scramblase

BC Lee, G Khelashvili, M Falzone, AK Menon… - Nature …, 2018 - nature.com
Members of the TMEM16/ANO family of membrane proteins are Ca2+-activated
phospholipid scramblases and/or Cl− channels. A membrane-exposed hydrophilic groove in …

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 …