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dTULP, the Drosophila melanogaster Homolog of Tubby, Regulates Transient Receptor Potential Channel Localization in Cilia

Authors
 Jina Park ; Jeongmi Lee ; Seok Jun Moon ; Chul Hoon Kim ; Yun Doo Chung ; Yong Chul Bae ; Jinu Lee ; Woongsu Han ; Jaewon Shim 
Citation
 PLoS Genetics, Vol.9(9) : e1003814, 2013 
Journal Title
 PLoS Genetics 
ISSN
 1553-7404 
Issue Date
2013
Abstract
Mechanically gated ion channels convert sound into an electrical signal for the sense of hearing. In Drosophila melanogaster, several transient receptor potential (TRP) channels have been implicated to be involved in this process. TRPN (NompC) and TRPV (Inactive) channels are localized in the distal and proximal ciliary zones of auditory receptor neurons, respectively. This segregated ciliary localization suggests distinct roles in auditory transduction. However, the regulation of this localization is not fully understood. Here we show that the Drosophila Tubby homolog, King tubby (hereafter called dTULP) regulates ciliary localization of TRPs. dTULP-deficient flies show uncoordinated movement and complete loss of sound-evoked action potentials. Inactive and NompC are mislocalized in the cilia of auditory receptor neurons in the dTulp mutants, indicating that dTULP is required for proper cilia membrane protein localization. This is the first demonstration that dTULP regulates TRP channel localization in cilia, and suggests that dTULP is a protein that regulates ciliary neurosensory functions.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/87591
DOI
10.1371/journal.pgen.1003814
Appears in Collections:
1. 연구논문 > 2. College of Dentistry > Dept. of Oral Biology
1. 연구논문 > 1. College of Medicine > Dept. of Pharmacology
Yonsei Authors
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