Adenylate cyclase inhibition and GTPase stimulation by somatostatin in S49 lymphoma cyc− variants are prevented by islet‐activating protein

Adenylate cyclase inhibition and GTPase stimulation by somatostatin in S49 lymphoma cyc− variants are prevented by islet‐activating protein
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胰岛激活蛋白可防止 S49 淋巴瘤 cyc− 变体中生长抑素对腺苷酸环化酶的抑制和 GTP 酶的刺激

DOI:
10.1016/0014-5793(83)80701-7
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发表时间:
1983
期刊:
影响因子:
3.5
通讯作者:
K. Jakobs
K. Jakobs
中科院分区:
生物学3区
文献类型:
--
作者:
K. Aktories;G. Schultz;K. Jakobs

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S49淋巴瘤细胞的Cyc−变异体在腺苷环化酶的刺激性鸟嘌呤核苷酸位点有缺陷,但含有抑制位点。用胰岛激活蛋白(IAP)处理Cyc−细胞,使Cyc−膜上的MR40000多肽发生二磷酸腺苷核糖化,可取消GTP和多肽激素生长抑素对腺苷环化酶的抑制,但不能抑制GTPγS对腺苷环化酶的抑制。因此,这些数据表明,IAP通过作用于抑制性鸟嘌呤核苷酸位点来干扰腺苷环化酶系统。
cyc−-Variants of S49 lymphoma cells are defective in the stimulatory guanine nucleotide site of the adenylate cyclase but contain an inhibitory site. Treatment of cyc−cells with islet-activating protein (IAP), which causes ADP-ribosylation of anMr40 000 polypeptide in cyc−membranes, abolishes adenylate cyclase inhibition by GTP and the peptide hormone, somatostatin, but not that induced by GTPγS. Furthermore, somatostatin-induced stimulation of GTP hydrolysis is lost. Thus, the data indicate that IAP interferes with the adenylate cyclase system by an action at the inhibitory guanine nucleotide site.
鸟嘌呤核苷酸抑制 cyc-S49 小鼠淋巴瘤细胞膜腺苷酸环化酶。
DOI: --
发表时间: 1982
期刊: The Journal of biological chemistry
影响因子: --
作者:
Hildebrandt,JD;Hanoune,J;Birnbaumer,L
通讯作者: Birnbaumer,L
通过胰岛激活蛋白鉴定 ADP-核糖基化的主要底物。
DOI: --
发表时间: 1983
期刊: The Journal of biological chemistry
影响因子: --
作者:
Bokoch,GM;Katada,T;Northup,JK;Hewlett,EL;Gilman,AG
通讯作者: Gilman,AG