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0.5 M EDTA, pH 8

Company: PANREAC QUÍMICA
Catalog#: A4892
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Assessment of Diadenylate Cyclase and c-di-AMP-phosphodiesterase Activities Using Thin-layer and Ion Exchange Chromatography
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2021-01-05
[Abstract]  

All living cells use cyclic nucleotides as second messengers for signal sensing and transduction. Cyclic di-3′,5′-adenosine monophosphate (c-di-AMP) is primarily involved in the control of bacterial and euryarcheal osmoadaptation and is produced by diadenylate cyclases from two molecules of ATP. Specific phosphodiesterases hydrolyze c-di-AMP to the linear phosphoadenylate adenosine 5′-pApA or to AMP. Different methods including high-performance liquid chromatography (HPLC), thin-layer chromatography (TLC) and ion exchange chromatography (IEX) can be used to determine activities of c-di-AMP-synthesizing and degrading enzymes. Here, we describe in detail the TLC and IEX methods adapted for characterization of the diadenylate cyclase DisA and the phosphodiesterase AtaC from

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[摘要]  [摘要]所有活细胞均使用环状核苷酸作为第二信使,以进行信号传感和转导。环状二-3 ' ,5 ' -腺苷一磷酸(C-二-AMP)主要涉及细菌和控制euryarcheal osmoadaptation并且由产生diadenylate环化酶从ATP的两个分子。特定的磷酸二酯酶将c-di-AMP水解为线性磷酸腺苷腺苷5'-pApA或AMP。可以使用包括高效液相色谱(HPLC),薄层色谱(TLC)和离子交换色谱(IEX)在内的各种方法来确定c-di-AMP合成和降解酶的活性。在这里,我们详细描述了TLC和IEX方法适合于表征diadenylate环化酶DISA和磷酸二酯酶ATAC从链霉菌venezuelae 。TLC可以快速,轻松地分离放射性标记的底物和产品,而IEX避免了潜在危险的放射性底物的利用,如果没有HPLC系统,则可以用作良好的替代品。与TLC分析不同,无法使用IEX分析并行分析样品,因此更加耗时。


[背景]环核苷酸第二信使是原核和真核信号通路中的关键分子。环状二-3 ' ,5 ' -腺苷一磷酸(三二- AMP)是一种细菌第二信使与许多重要的功能,如渗压剂动态平衡调节,细胞壁代谢,生物膜的形成,DNA完整,孢子形成,毒力和生长(Fahmi et ...

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