SARS-COV-2 / CORONAVIRUS / VIRAL PROTEIN / CAPSID PROTEIN / MEMBRANE PROTEIN
機能・相同性
機能・相同性情報
Maturation of protein M / SARS-CoV-2 modulates autophagy / host cell Golgi membrane / CD28 dependent PI3K/Akt signaling / SARS-CoV-2 targets host intracellular signalling and regulatory pathways / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS activity / protein sequestering activity / VEGFR2 mediated vascular permeability / PIP3 activates AKT signaling / TRAF3-dependent IRF activation pathway ...Maturation of protein M / SARS-CoV-2 modulates autophagy / host cell Golgi membrane / CD28 dependent PI3K/Akt signaling / SARS-CoV-2 targets host intracellular signalling and regulatory pathways / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS activity / protein sequestering activity / VEGFR2 mediated vascular permeability / PIP3 activates AKT signaling / TRAF3-dependent IRF activation pathway / Translation of Structural Proteins / Virion Assembly and Release / Induction of Cell-Cell Fusion / structural constituent of virion / Attachment and Entry / viral envelope / SARS-CoV-2 activates/modulates innate and adaptive immune responses / virion membrane / identical protein binding / plasma membrane 類似検索 - 分子機能
M matrix/glycoprotein, SARS-CoV-like / M matrix/glycoprotein, coronavirus / Coronavirus M matrix/glycoprotein / Coronavirus membrane (Cov-M) protein profile. 類似検索 - ドメイン・相同性
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
AI169896
米国
引用
ジャーナル: bioRxiv / 年: 2024 タイトル: Direct lipid interactions control SARS-CoV-2 M protein conformational dynamics and virus assembly. 著者: Mandira Dutta / Kimberly A Dolan / Souad Amiar / Elijah J Bass / Rokaia Sultana / Gregory A Voth / Stephen G Brohawn / Robert V Stahelin / 要旨: M is the most abundant structural membrane protein in coronaviruses and is essential for the formation of infectious virus particles. SARS-CoV-2 M adopts two conformations, M and M, and regulated ...M is the most abundant structural membrane protein in coronaviruses and is essential for the formation of infectious virus particles. SARS-CoV-2 M adopts two conformations, M and M, and regulated transition between states is hypothesized to coordinate viral assembly and budding. However, the factors that regulate M conformation and roles for each state are unknown. Here, we discover a direct M-sphingolipid interaction that controls M conformational dynamics and virus assembly. We show M binds Golgi-enriched anionic lipids including ceramide-1-phosphate (C1P). Molecular dynamics simulations show C1P interaction promotes a long to short transition and energetically stabilizes M. Cryo-EM structures show C1P specifically binds M at a conserved site bridging transmembrane and cytoplasmic regions. Disrupting M-C1P interaction alters M subcellular localization, reduces interaction with Spike and E, and impairs subsequent virus-like particle cell entry. Together, these results show endogenous signaling lipids regulate M structure and support a model in which M is stabilized in the early endomembrane system to organize other structural proteins prior to viral budding.