The VTT domain was previously called the SNARE-assoc domain. As there is no evidence that this domain associates with SNARE proteins, it was renamed as VMP1, TMEM41, and TVP38 (VTT) domain.
(Microbial infection) VTT domain is required for flavivirus infection.
Phospholipid scramblase involved in lipid homeostasis and membrane dynamics processes (PubMed:33850023, PubMed:33929485, PubMed:34015269). Has phospholipid scramblase activity toward cholesterol and phosphatidylserine, as well as phosphatidylethanolamine and phosphatidylcholine (PubMed:33850023, PubMed:33929485, PubMed:34015269). Required for autophagosome formation: participates in early stages of autophagosome biogenesis at the endoplasmic reticulum (ER) membrane by reequilibrating the leaflets of the ER as lipids are extracted by ATG2 (ATG2A or ATG2B) to mediate autophagosome assembly (PubMed:30093494, PubMed:30126924, PubMed:30933966, PubMed:33850023, PubMed:33929485, PubMed:34015269, PubMed:34043740). In addition to autophagy, involved in other processes in which phospholipid scramblase activity is required (PubMed:33850023). Required for normal motor neuron development (By similarity).
(Microbial infection) Critical host factor required for infection by human coronaviruses SARS-CoV-2, HCoV-OC43, HCoV-NL63, and HCoV-229E, as well as all flaviviruses tested such as Zika virus and Yellow fever virus (PubMed:33338421, PubMed:33382968). Required post-entry of the virus to facilitate the ER membrane remodeling necessary to form replication organelles (PubMed:33382968).
Belongs to the TMEM41 family.
KIAA0033, TMEM41B, Transmembrane protein 41B, Protein stasimon
Proteins
Immunology & Infectious Disease
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