4.受容体によるGタンパク質活性の調節 : 三量体Gタンパク質研究の現状
スポンサーリンク
概要
- 論文の詳細を見る
Receptors located on the cell surface are responsible for recognition of extracellular first messengers. The largest number of receptors belongs to a G protein-coupled receptor superfamily. They showed common structural features characterized by seven transmembrane regions and three connecting extracellular and intracellular loops. Stimulation of a receptor by an agonist activates the coupled G protein. From in vitro mutagenesis analyses of β<SUB>2</SUB>-adrenergic, muscarinic acetylcholine and α<SUB>1</SUB>-adrenergic receptors, it was shown that the intracellular third loop and carboxyl terminus of the receptor molecule are involved in coupling with a G protein. One intriguing observation was that mutation at a single site of the intracellular third loop could induce the active state of receptors without agonist stimulation. Receptor heterogeneity generated from distinct genes or alternative splicing can be seen at the intracellular third loop and carboxyl terminus that is assumed to play an important role of coupling with G proteins. There are several examples that receptor isoforms arising from alternative splicing have their own counterparts of G proteins.
- 社団法人 日本薬理学会の論文
著者
関連論文
- Gタンパク質共役型受容体 : TRPCチャネルタンパク複合体形成による心肥大シグナル制御
- 三量体Gタンパク質シグナリングを介した心不全発症の分子機構
- 循環調節 βアドレナリン受容体 (第5土曜特集 最新 G蛋白質共役受容体研究--疾患解明とシグナル制御の新時代) -- (受容体機能の新たな展開)
- 医薬分業における薬学教育のあり方
- 技術賞受賞 安定PGI_2誘導体ベラプロストナトリウムの開発
- 医療技術の発展はこのような医薬品を望んでいる
- 三量体Gタンパク質シグナリングを介した心不全発症の分子機構
- アンジオテンシンIIで誘発される心肥大の分子機構 : TRPタンパク質を巡って
- Relation between Blood Pressure and Plasma Catecholamine Concentration after Administration of Calcium Antagonists to Rats
- 0388 Preconditioningによる低分子量熱ショック蛋白質HSP27のsarcomereへの移行とp38MAP kinaseの役割