Synthesis of cyclic adenosine 5′-diphosphate ribose analogues: a C2′ endo/syn “southern” ribose conformation underlies activity at the sea urchin cADPR receptor
作者:Christelle Moreau、Gloria A. Ashamu、Victoria C. Bailey、Antony Galione、Andreas H. Guse、Barry V. L. Potter
DOI:10.1039/c0ob00396d
日期:——
Novel 8-substituted base and sugar-modified analogues of the Ca2+ mobilizing second messenger cyclic adenosine 5â²-diphosphate ribose (cADPR) were synthesized using a chemoenzymatic approach and evaluated for activity in sea urchin egg homogenate (SUH) and in Jurkat T-lymphocytes; conformational analysis investigated by 1H NMR spectroscopy revealed that a C2â² endo/syn conformation of the âsouthernâ ribose is crucial for agonist or antagonist activity at the SUH-, but not at the T cell-cADPR receptor.
采用化学酶法合成了新型 8 取代碱基和糖修饰的 Ca2+ 调动第二信使环腺苷-5â²-二磷酸核糖(cADPR)类似物,并对其在海胆卵匀浆(SUH)和 Jurkat T 淋巴细胞中的活性进行了评估;通过 1H NMR 光谱进行的构象分析发现,C2â² 内/同步构象是 CADPR 在海胆蛋匀浆(SUH)受体(而不是在 T 细胞-CADPR 受体)中发挥激动剂或拮抗剂活性的关键。