A role for nyctalopin, a small leucine-rich repeat protein, in localizing the TRP melastatin 1 channel to retinal depolarizing bipolar cell dendrites

Jillian N. Pearring, Pasano Bojang, Yin Shen, Chieko Koike, Takahisa Furukawa, Scott Nawy, Ronald G. Gregg

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

Expression of channels to specific neuronal sites can critically impact their function and regulation. Currently, the molecular mechanisms underlying this targeting and intracellular trafficking of transient receptor potential (TRP) channels remain poorly understood, and identifying proteins involved in these processes will provide insight into underlying mechanisms. Vision is dependent on the normal function of retinal depolarizing bipolar cells (DBCs), which couple a metabotropic glutamate receptor 6 to the TRP melastatin 1 (TRPM1) channel to transmit signals from photoreceptors. We report that the extracellular membrane-attached protein nyctalopin is required for the normal expression of TRPM1 on the dendrites of DBCs in mus musculus. Biochemical and genetic data indicate that nyctalopin and TRPM1 interact directly, suggesting that nyctalopin is acting as an accessory TRP channel subunit critical for proper channel localization to the synapse.

Original languageEnglish (US)
Pages (from-to)10060-10066
Number of pages7
JournalJournal of Neuroscience
Volume31
Issue number27
DOIs
StatePublished - Jul 6 2011

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Retinal Bipolar Cells
Transient Receptor Potential Channels
Dendrites
Synapses
Molecular Biology
Membrane Proteins
Proteins
leucine-rich repeat proteins
trophoblastin

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

A role for nyctalopin, a small leucine-rich repeat protein, in localizing the TRP melastatin 1 channel to retinal depolarizing bipolar cell dendrites. / Pearring, Jillian N.; Bojang, Pasano; Shen, Yin; Koike, Chieko; Furukawa, Takahisa; Nawy, Scott; Gregg, Ronald G.

In: Journal of Neuroscience, Vol. 31, No. 27, 06.07.2011, p. 10060-10066.

Research output: Contribution to journalArticle

Pearring, Jillian N. ; Bojang, Pasano ; Shen, Yin ; Koike, Chieko ; Furukawa, Takahisa ; Nawy, Scott ; Gregg, Ronald G. / A role for nyctalopin, a small leucine-rich repeat protein, in localizing the TRP melastatin 1 channel to retinal depolarizing bipolar cell dendrites. In: Journal of Neuroscience. 2011 ; Vol. 31, No. 27. pp. 10060-10066.
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