ArticlebioRxiv : the preprint server for biology2026
Palmitoylated importin α recruits PKCε to the plasma membrane to drive breast cancer cell motility.
Article in bioRxiv : the preprint server for biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Importin ⍺ is a nuclear transport factor which canonically has a role in binding and shuttling NLS-containing proteins from the cytoplasm into the nucleus. Recently, it has been shown that when palmitoylated by specific palmitoyl acyl transferases, importin ⍺ can partition to the plasma membrane where its roles remain widely unknown. Patients with breast cancer displaying increased importin ⍺ expression have advanced tumor size, poor tumor differentiation, and reduced overall and recurrence-free survival. In this study, we use palmitoylation altering pharmacological agents to demonstrate that membrane bound palmitoylated importin ⍺ enhances breast cancer cell motility through binding and tethering the serine/threonine kinase PKCε to the plasma membrane.
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