Molecular cloning and expression of an adenosine A2b receptor from human brain.

Molecular cloning and expression of an adenosine A2b receptor from human brain.
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人脑腺苷 A2b 受体的分子克隆和表达。

DOI:
10.1016/s0006-291x(05)81462-7
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发表时间:
1992
影响因子:
3.1
通讯作者:
J. Shine
J. Shine
中科院分区:
生物学4区
文献类型:
--
作者:
K. Pierce;T. Furlong;L. Selbie;J. Shine

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从人海马cDNA文库中分离出一种新的受体cDNA。编码的多肽含有与其G蛋白偶联受体分类一致的结构特征,并与人A1和A2 a腺苷受体具有45%的同源性。表达该受体的中国仓鼠卵巢K1细胞在用1 mM腺苷处理时显示出对腺苷酸环化酶的显著刺激。对A1和A2 a受体选择性配体无反应,但一般腺苷激动剂N-乙基羧酰胺腺苷(NECA)可使环AMP蓄积增加10倍,EC 50约为0.9μM。这种作用被腺苷受体拮抗剂茶碱抑制。未检测到A1和A2 a选择性激动剂与NECA的特异性结合。它提出了新的受体是人脑腺苷A2 b受体亚型。
A novel receptor cDNA was isolated from a human hippocampal cDNA library. The encoded polypeptide contains structural features consistent with its classification as a G protein-coupled receptor and shares 45% homology with the human A1 and A2a adenosine receptors. Chinese hamster ovary K1 cells expressing this receptor showed marked stimulation of adenylate cyclase when treated with 1mM adenosine. There was no response to ligands selective for A1 and A2a receptors but the general adenosine agonist N-ethylcarboxyamidoadenosine (NECA) caused a 10 fold increase in cyclic AMP accumulation with an EC50of approximately 0.9μM. This effect was inhibited by the adenosine receptor antagonist theophylline. Specific binding of A1 and A2a selective agonists and NECA was not detected. It is proposed that the novel receptor is a human brain adenosine A2b receptor subtype.
新型 A2-腺苷受体亚型 cDNA 的分子克隆和表达。
DOI: 10.1210/mend.6.3.1584214
发表时间: 1992
期刊: Molecular endocrinology (Baltimore, Md.)
影响因子: --
作者:
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影响因子: --
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