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頁籤選單縮合
題 名 | The Formation of Triple Stranded Helix of Oligodeoxyribonucleotides Containing 8-Oxo-2'-deoxyadenosine |
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作 者 | 林淑萍; 吳嘉茂; 林維政; 甘魯生; | 書刊名 | Journal of the Chinese Chemical Society |
卷 期 | 46:5 1999.10[民88.10] |
頁 次 | 頁693-697 |
分類號 | 361.4 |
關鍵詞 | 螢光; Triple stranded helix triplex; Oligodeoxyribonucleotide; 8-Oxo-2'-deoxyadenosine; UV; Fluorescence; |
語 文 | 英文(English) |
英文摘要 | Triple stranded DNA helix (triplex) formation is limited by pH and the sequence of oligodeoxyribonucleotide. In this study, the 8-oxo-2'-deoxyadenosine (8-oxoA) can replace 2'-deoxycytidine for forming a base triad with a base pair guanine and cytosine. The target for the triplex formation is a motif of a promotor (5'-d-TTGGGGGGGAA, -3 -- -12 of PKC �� m-RNA) of mouse protein kinase C ��. The probes contain 20 bases with a common sequence 5'-d-XXXXXXTTCCCCCCAA. The XXXXXX portion may contain either 5-methyl-2'-deoxycytidines, six 8-oxoA's or both. Only the probe with a motif of six 8-oxoA's can for triplex with the target in the presence of magnesium ion and spermine at neutral pH. Therefore, 8-oxoA is useful for triplex formation under physiological conditions. |
本系統中英文摘要資訊取自各篇刊載內容。