计算溶液所需的质量、体积或浓度。
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在色谱分析、有机合成和交叉偶联反应领域已被 0 篇同行评审文献引用。
2‑氨基嘌呤是鸟苷与腺苷的荧光类似物,用作核酸结构与动力学的位点特异性探针。它可通过摆动构型与胞嘧啶配对,或以沃森‑克里克构型与胸腺嘧啶配对。除用于碱基堆叠相互作用研究外,2‑氨基嘌呤还可作为探针,用于甲基转移酶介导的 DNA 碱基翻转实验。2‑氨基嘌呤激发 / 发射波长为 320 nm/381 nm,该波长设置可减少 DNA 碱基吸收以及色氨酸荧光带来的干扰。2‑氨基嘌呤可抑制双链 RNA 依赖性蛋白激酶(PKR);该激酶参与介导抗病毒防御,并参与 Toll 样受体信号通路。
实验操作流程
2‑氨基嘌呤为结晶固体。可将结晶固体直接溶于水性缓冲液配制水溶液。2‑氨基嘌呤在 pH 7.2 的 PBS 中溶解度约为 5 mg/mL。不建议水溶液储存超过 1 天。
2‑Aminopurine is a fluorescent analog of guanosine and adenosine that is used as a site‑specific probe of nucleic acid structure and dynamics. It base pairs with cytosine in a wobble configuration or with thymine in a Watson‑Crick geometry. In addition to its usefulness in studies of base stacking interactions, 2‑aminopurine has been used as a probe for DNA base flipping by methyl transferases. 2‑Aminopurine exhibits an excitation/emission of 320/381 nm, respectively, when adjusted to reduce interference with DNA base absorption as well as tryptophan fluorescence. 2‑Aminopurine inhibits the double‑stranded RNA‑dependent protein kinase, protein kinase R, whose activity mediates antiviral defense and participates in toll‑like receptor signaling.
Laboratory Procedures
2‑Aminopurine is supplied as a crystalline solid. Aqueous solutions of 2‑Aminopurine can be prepared by directly dissolving the crystalline solid in aqueous buffers. The solubility of 2‑Aminopurine in PBS, pH 7.2, is approximately 5 mg/ml. We do not recommend storing the aqueous solution for more than one day.
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