A subtype of opioid κ-receptor is coupled to inhibition of Gil-mediated phospholipase C activity in the guinea pig cerebellum

Hidemi Misawa, Hiroshi Ueda, Toshiaki Katada, Michio Ui, Masamichi Satoh

研究成果: Article査読

23 被引用数 (Scopus)

抄録

PLC activity was stimulated either by 1-100 μM of GTP or by 100-3,000 μM Ca2+ in lysed synaptosomal membranes of the guinea pig cerebellum. The κ-opioid receptor agonist selectively inhibited the PLC activity stimulated by 100 μM GTP, but not by 100-3,000 μM Ca2+. Pretreatment of membranes with PTX abolished such a κ-agonist-induced inhibition of PLC activity. The reconstitution of Gi1, but not of Go purified from porcine brains with PTX-treated membranes showed a complete recovery of the κ-agonist-inhibition of PLC activity. These findings suggest that a novel subtype κ-receptor mediates inhibition of PLC through inhibiting the intrinsic activity of PTX-substrate G-proteins.

本文言語English
ページ(範囲)106-110
ページ数5
ジャーナルFEBS Letters
361
1
DOI
出版ステータスPublished - 1995 3月 13
外部発表はい

ASJC Scopus subject areas

  • 生物理学
  • 構造生物学
  • 生化学
  • 分子生物学
  • 遺伝学
  • 細胞生物学

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