Sensitivity of Peripheral Membrane Proteins to the Membrane Context: A Case Study of Phosphatidylserine and the TIM Proteins
Overview
Biophysics
Cell Biology
Affiliations
There is a diverse class of peripheral membrane-binding proteins that specifically bind phosphatidylserine (PS), a lipid that signals apoptosis or cell fusion depending on the membrane context of its presentation. PS-receptors are specialized for particular PS-presenting pathways, indicating that they might be sensitive to the membrane context. In this review, we describe a combination of thermodynamic, structural, and computational techniques that can be used to investigate the mechanisms underlying this sensitivity. As an example, we focus on three PS-receptors of the T-cell Immunoglobulin and Mucin containing (TIM) protein family, which we have previously shown to differ in their sensitivity to PS surface density.
TIM proteins and microRNAs: distinct impact and promising interactions on transplantation immunity.
Tao J, Shen X, Qian H, Ding Q, Wang L Front Immunol. 2024; 15:1500228.
PMID: 39650660 PMC: 11621082. DOI: 10.3389/fimmu.2024.1500228.
Can calmodulin bind to lipids of the cytosolic leaflet of plasma membranes?.
Scollo F, Tempra C, Evci H, Riopedre-Fernandez M, Olzynska A, Javanainen M Open Biol. 2024; 14(9):240067.
PMID: 39288811 PMC: 11500697. DOI: 10.1098/rsob.240067.
Binding equations for the lipid composition dependence of peripheral membrane-binding proteins.
Kerr D, Suwatthee T, Maltseva S, Lee K Biophys J. 2024; 123(7):885-900.
PMID: 38433448 PMC: 10995427. DOI: 10.1016/j.bpj.2024.02.031.
Function and characteristics of TIM‑4 in immune regulation and disease (Review).
Wang Z, Chen C, Su Y, Ke N Int J Mol Med. 2022; 51(2).
PMID: 36524355 PMC: 9848438. DOI: 10.3892/ijmm.2022.5213.
Phosphatidylserine clustering by the Ebola virus matrix protein is a critical step in viral budding.
Husby M, Amiar S, Prugar L, David E, Plescia C, Huie K EMBO Rep. 2022; 23(11):e51709.
PMID: 36094794 PMC: 9638875. DOI: 10.15252/embr.202051709.