Localization of N-ethylmaleimide-sensitive fusion protein in pinealocytes

Yoshinori Moriyama, Akitsugu Yamamoto, Mitsuo Tagaya, Yutaka Tashiro, Hitoshi Michibata

研究成果査読

16 被引用数 (Scopus)

抄録

N-ETHYLMALElMiDE-sensitive fusion protein (NSF), a protein necessary for vesicular docking and/or fusion, was detected immunohistochemically in pinealocytes. NSF was distributed similarly to synaptophysin and vacuolar-type H+-ATPase (V-ATPase), marker proteins for synaptic-like microvesicles (MVs) abundantly present in pinealocytes. A subcellular fractionation study indicated that >95% of NSF was present as a membrane-bound form and that some NSF was associated with MVs. Like neuronal NSF, the protein was not solubilized from membranes with either 2mM Mg-ATP or 2% sodium carbonate, suggesting that NSF was tightly bound to the membranes. NSF was also detected in purified MVs from bovine posterior pituitaries. Since MVs are the organelles in which transmitters are stored, these results suggest that NSF is involved in the MV-mediated exocytosis of transmitters from endocrine cells.

本文言語English
ページ(範囲)1757-1760
ページ数4
ジャーナルNeuroReport
6
13
DOI
出版ステータスPublished - 9月 1995
外部発表はい

ASJC Scopus subject areas

  • 神経科学一般

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