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Screening of AMP-activated protein kinase α2 subunit interacting proteins by bacterial two-hybrid system

机译:细菌双杂交系统筛选AMP激活的蛋白激酶α2亚基相互作用蛋白

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摘要

AMP-activated protein kinase (AMPK) is a ubiquitous eukaryotic protein kinase regulating cellular metabolism and energy demand. In brain AMPK plays a role as a multidimensional energy sensor and AMPK α2 subunit is expressed at higher levels than AMPK α1 subunit. In order to identify potential targets of AMPK in brain, we perform bacterial two-hybrid screening of a rat fetal brain cDNA library using AMPK α2 subunit as bait. Here, we present seven potential AMPK α2 subunit interacting proteins, including 6-phosphofructo-1-kinase (PFK-1), polyubiquitin, cytochrome c oxidase subunit I (COX I), heat shock protein 8 (HSP8), HLA-B-associated transcript 3 (BAT3) isoform 1, protein tyrosine phosphatase receptor type D (PTPRD) and islet-brain 1 (IB1). They are involved in glycolysis, protein degradation, mitochondrial electron transport and apoptosis pathways participating in energy regulation directly or indirectly. These data may provide new insight into further studying the pathways of AMPK energy regulation in brain and possible mechanisms of AMPK-mediated neuroprotective effect.
机译:AMP激活蛋白激酶(AMPK)是一种普遍存在的真核蛋白激酶,可调节细胞代谢和能量需求。在脑中,AMPK充当多维能量传感器,并且AMPKα2亚基的表达水平高于AMPKα1亚基。为了鉴定脑中AMPK的潜在靶点,我们使用AMPKα2亚基作为诱饵,对大鼠胎儿脑cDNA文库进行细菌双杂交筛选。在这里,我们介绍了七个潜在的AMPKα2亚基相互作用蛋白,包括6-磷酸果糖-1-激酶(PFK-1),聚泛素,细胞色素C氧化酶亚基I(COX I),热激蛋白8(HSP8),HLA-B-相关转录本3(BAT3)同工型1,蛋白酪氨酸磷酸酶受体D型(PTPRD)和胰岛脑1(IB1)。它们参与糖酵解,蛋白质降解,线粒体电子运输和凋亡途径,直接或间接参与能量调节。这些数据可能为进一步研究大脑中AMPK能量调节的途径以及AMPK介导的神经保护作用的可能机制提供新的见识。

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