The fission yeast FLCN/FNIP complex augments TORC1 repression or activation in response to amino acid (AA) availability.

The fission yeast FLCN/FNIP complex augments TORC1 repression or activation in response to amino acid (AA) availability.
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DOI:
10.1016/j.isci.2021.103338
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发表时间:
2021-11-19
期刊:
影响因子:
5.8
通讯作者:
Motamedi M
Motamedi M
中科院分区:
综合性期刊2区
文献类型:
--
作者:
Calvo IA;Sharma S;Paulo JA;Gulka AOD;Boeszoermenyi A;Zhang J;Lombana JM;Palmieri CM;Laviolette LA;Arthanari H;Iliopoulos O;Gygi SP;Motamedi M

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雷帕霉素复合物 1 (TORC1) 的靶标可感知并整合多种环境信号,包括氨基酸 (AA) 的可用性,以调节细胞生长。滤泡蛋白 (FLCN) 是肾细胞癌中的一种肿瘤抑制 (TS) 蛋白,在补充 AA 后,它会反常地激活 TORC1。很少有易于处理的系统可以将 FLCN 建模为 TS。在这里,我们表征了粟酒裂殖酵母中含有 FLCN 的复合物(称为 BFC),并表明 BFC 分别增强了 TORC1 的抑制和激活,以响应 AA 饥饿和补充。 BFC 免疫共沉淀 V-ATPase(一种 TORC1 调节剂),并以 AA 依赖性方式调节其活性。 BFC 遗传和蛋白质组网络将保守的肽跨膜转运蛋白 Ptr2 和磷酸核糖甲酰甘氨脒合酶 Ade3 识别为 TORC1 的新 AA 依赖性调节因子。总体而言,这些数据将 TORC1 调节中的额外抑制功能归因于卵泡素,并揭示了粟酒裂殖酵母作为模拟真核生物中 AA 依赖性、FLCN 介导的 TORC1 抑制的出色系统。粟酒裂殖酵母卵泡蛋白复合物 Bhd1-Fnp1 复合物 (BFC) 会根据氨基酸水平增强 TORC1 的抑制或激活,类似于变阻器 BFC 会根据氨基酸水平相互作用并调节 V-ATP 酶活性 蛋白质组学数据显示 Ptr2 和 Ade3 作为 TORC1 的新型氨基酸依赖性调节因子 裂殖酵母是研究肿瘤的绝佳模型 BFC 和相关蛋白的抑制功能 细胞生理学;细胞生物学;细胞生物学的功能方面
The target of Rapamycin complex1 (TORC1) senses and integrates several environmental signals, including amino acid (AA) availability, to regulate cell growth. Folliculin (FLCN) is a tumor suppressor (TS) protein in renal cell carcinoma, which paradoxically activates TORC1 in response to AA supplementation. Few tractable systems for modeling FLCN as a TS are available. Here, we characterize the FLCN-containing complex in Schizosaccharomyces pombe (called BFC) and show that BFC augments TORC1 repression and activation in response to AA starvation and supplementation, respectively. BFC co-immunoprecipitates V-ATPase, a TORC1 modulator, and regulates its activity in an AA-dependent manner. BFC genetic and proteomic networks identify the conserved peptide transmembrane transporter Ptr2 and the phosphoribosylformylglycinamidine synthase Ade3 as new AA-dependent regulators of TORC1. Overall, these data ascribe an additional repressive function to Folliculin in TORC1 regulation and reveal S. pombe as an excellent system for modeling the AA-dependent, FLCN-mediated repression of TORC1 in eukaryotes. The S.pombe Folliculin complex, Bhd1-Fnp1 Complex (BFC) augments repression or activation of TORC1 in response to amino acid levels, similar to a rheostat BFC interacts and regulates V-ATPase activity in response to amino acid levels Proteomic data reveal Ptr2 and Ade3 as novel amino acid-dependent regulators of TORC1 S.pombe is an excellent model for studying the tumor suppressor function of BFC and related proteins Cellular physiology; Cell biology; Functional aspects of cell biology
Gator1-SEA3复合物,TSC复合物和GCN2激酶对裂变酵母Torc1信号的三方抑制。
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