Removal of the A(10)adenosine in a DNA-stabilized Ag(16)nanocluster

Cerretani Cecilia; Kondo Jiro; Vosch Tom

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Removal of the A(10)adenosine in a DNA-stabilized Ag(16)nanocluster

机译：在DNA稳定的Ag（16）纳米光泽颗粒中除去A（10）腺苷

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The role of the terminal adenosine (A(10)) on the spectroscopic and structural properties of a previously described DNA-stabilized Ag(16)nanocluster (DNA:Ag16NC) is presented. In the original DNA:Ag16NCs (5 '-CACCTAGCGA-3 '), the A(10)nucleobase was involved in an Ag+-mediated interaction with an A(10)in a neighboring asymmetric unit, and did not interact with the Ag16NC. Therefore, we synthesized AgNCs embedded in the corresponding 9-base sequence in order to investigate the crystal structure of these new DNA-A(10):Ag16NCs and analyze the photophysical properties of the solution and crystalline state. The X-ray crystallography and spectroscopic measurements revealed that the 3 '-end adenosine has little importance with respect to the photophysics and structure of the Ag16NCs. Additionally, the new crystallographic data was recorded with higher spatial resolution leading to a more detailed insight in the interactions between the nucleotides and Ag atoms.

机译：呈末端腺苷（A（10））对先前描述的DNA稳定的Ag（16）纳米簇（DNA：Ag16NC）的光谱和结构性质的作用。在原始DNA：Ag16NCs（5'-Cacctagccga-3'）中，A（10）核酸酶参与与相邻的不对称单元中的A（10）的Ag +介导的相互作用，并且没有与Ag16NC相互作用。因此，我们合成嵌入相应的9碱基序列中的AGNC，以研究这些新DNA-A（10）：Ag16CS的晶体结构并分析溶液的光学性质和结晶状态。 X射线晶体学和光谱测量表明，3' - 腺苷对Ag16NC的光学和结构几乎没有重要。另外，新的晶体数据以较高的空间分辨率记录，导致核苷酸和Ag原子之间的相互作用更详细的洞察。

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《RSC Advances》 |2020年第40期|共7页
作者
Cerretani Cecilia; Kondo Jiro; Vosch Tom;
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作者单位

Univ Copenhagen Nanosci Ctr Univ Pk 5 DK-2100 Copenhagen Denmark;

Sophia Univ Dept Mat &

Life Sci Chiyoda Ku 7-1 Kioi Cho Tokyo 1028554 Japan;

Univ Copenhagen Nanosci Ctr Univ Pk 5 DK-2100 Copenhagen Denmark;

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正文语种 eng
中图分类化学;
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机译：在DNA稳定的Ag（16）纳米光泽颗粒中除去A（10）腺苷
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Removal of the A(10)adenosine in a DNA-stabilized Ag(16)nanocluster

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