Transient receptor potential N (TRPN1) from Xenopus interacts with the penta-EF-hand protein peflin

Abstract

TRPN1 is a candidate mechanotransduction channel in Drosophila and Caenorhabditis elegans, also present in hair cells of lower vertebrates. At its N-terminal cytoplasmic tail it contains 28 ankyrin repeats. We performed a yeast two-hybrid screen with the N-terminal ankyrin repeats of Xenopus TRPN1 as bait and identified the Penta-EF-hand protein peflin as a putative interaction partner. We confirmed this interaction by GST pulldown assays and by co-localization in an epithelial cell model. Collectively, our study identifies peflin as an interaction partner of TRPN1 in vitro.