Why the study?
Phosphatidylinositol-4 kinase III beta is a host factor required for enterovirus replication, but the importance of its interacting host proteins was unknown.
Interaction of PI4KB with ACBD3, RAB11, and 14-3-3 proteins is not essential for enterovirus replication once PI4KB has been expressed.
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PI4KB interactions with ACBD3, RAB11, and 14-3-3 are dispensable for EV replication; leaves open identification of critical host partners.
Phosphatidylinositol-4 kinase III β (PI4KB) is a host factor that is required for enterovirus (EV) replication. In this study, the importance of host proteins that interact with PI4KB in EV replication was analyzed by trans complementation with PI4KB mutants in a PI4KB-knockout cell line. Ectopically expressed PI4KB mutants, which lack binding regions for ACBD3, RAB11, and 14-3-3 proteins, rescued replication of poliovirus and enterovirus 71. These findings suggest that interaction of PI4KB with these host proteins is not essential for EV replication once PI4KB has been expressed and that PI4KB is functionally independent from these host proteins regarding EV replication.
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Minetaro Arita (2019) studied this question.
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