Regulation of phospholipid distribution in the lipid bilayer by flippases and scramblases

T Sakuragi, S Nagata - Nature Reviews Molecular Cell Biology, 2023 - nature.com
Cellular membranes function as permeability barriers that separate cells from the external
environment or partition cells into distinct compartments. These membranes are lipid …

The role of lipid scramblases in regulating lipid distributions at cellular membranes

Y Wang, T Kinoshita - Biochemical Society Transactions, 2023 - portlandpress.com
Glycerophospholipids, sphingolipids and cholesterol assemble into lipid bilayers that form
the scaffold of cellular membranes, in which proteins are embedded. Membrane …

Structural basis for the activation of the lipid scramblase TMEM16F

M Arndt, C Alvadia, MS Straub… - Nature …, 2022 - nature.com
TMEM16F, a member of the conserved TMEM16 family, plays a central role in the initiation
of blood coagulation and the fusion of trophoblasts. The protein mediates passive ion and …

Structural heterogeneity of the ion and lipid channel TMEM16F

Z Ye, N Galvanetto, L Puppulin, S Pifferi… - Nature …, 2024 - nature.com
Abstract Transmembrane protein 16 F (TMEM16F) is a Ca2+-activated homodimer which
functions as an ion channel and a phospholipid scramblase. Despite the availability of …

Substrate binding-induced conformational transitions in the omega-3 fatty acid transporter MFSD2A

S Bergman, RJ Cater, A Plante, F Mancia… - Nature …, 2023 - nature.com
Abstract Major Facilitator Superfamily Domain containing 2 A (MFSD2A) is a transporter that
is highly enriched at the blood-brain and blood-retinal barriers, where it mediates Na+ …

Extracellular calcium functions as a molecular glue for transmembrane helices to activate the scramblase Xkr4

P Zhang, M Maruoka, R Suzuki, H Katani, Y Dou… - Nature …, 2023 - nature.com
The “eat me” signal, phosphatidylserine is exposed on the surface of dying cells by
phospholipid scrambling. Previously, we showed that the Xkr family protein Xkr4 is activated …

Structural basis of closed groove scrambling by a TMEM16 protein

Z Feng, OE Alvarenga-Cruz, A Accardi - Biophysical Journal, 2024 - cell.com
Activation of Ca 2+-dependent TMEM16 scramblases induces the externalization of
phosphatidylserine, a key molecule in multiple signaling processes. Current models suggest …

[HTML][HTML] Biomembranes balance many types of leaflet asymmetries

M Deserno - Current Opinion in Structural Biology, 2024 - Elsevier
Many biological membranes host different lipid species in their two leaflets. Since their
spontaneous curvatures are typically not the same, this compositional asymmetry generally …

In or out of the groove? Mechanisms of lipid scrambling by TMEM16 proteins

Z Feng, E Di Zanni, O Alvarenga, S Chakraborty… - Cell Calcium, 2024 - Elsevier
Phospholipid scramblases mediate the rapid movement of lipids between membrane
leaflets, a key step in establishing and maintaining membrane homeostasis of the …

Synergy and anti‐cooperativity in allostery: Molecular dynamics study of WT and oncogenic KRAS‐RGL1

A Hacisuleyman, B Erman - Proteins: Structure, Function, and …, 2024 - Wiley Online Library
This study focuses on investigating the effects of an oncogenic mutation (G12V) on the
stability and interactions within the KRAS‐RGL1 protein complex. The KRAS‐RGL1 complex …