ArticlebioRxiv : the preprint server for biology2025
PILS-Nir1 is a novel phosphatidic acid biosensor that reveals mechanisms of lipid production.
Article in bioRxiv : the preprint server for biology, 2025. 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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7 authors at 3 institutions in 1 country.
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Abstract
Despite various roles of phosphatidic acid (PA) in cellular functions such as lipid homeostasis and vesicular trafficking, there is a lack of high-affinity tools to study PA in live cells. After analyzing the predicted structure of the LNS2 domain from the lipid transfer protein Nir1, we suspected that this phosphatidic acid-interacting Lipin-like sequence of Nir1 (PILS-Nir1) could serve as a novel PA biosensor. We then performed liposome binding assays as well as pharmacological and genetic manipulations of HEK293A cells expressing a fluorescent PILS-Nir1 to determine how specific lipids affect the interaction of PILS-Nir1 with membranes. We found that PILS-Nir1 bound to both PA and PIP
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