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小凡你行的: 金币+30, 博学EPI+1, ★★★很有帮助 2013-04-04 23:33:27
For the preparation of DNA-Au NPs, the terminal disulfide groups of the DNA strands were reduced by soaking the strands in a 0.1 M dithiothreitol phosphate buffer solution (0.17 M phosphate, pH 8.0) for 30 min. The cleaved DNA strands were purified on a NAP-5 column (GE Healthcare) and added to the gold colloid (the final oligonucleotide concentration is ~ 3 μM). The solution was buffered to 0.15 M NaCl, 10 mM phosphate, and 0.01 % SDS by simultaneously adding appropriate amount of 1 % SDS solution, 2 M NaCl solution and 0.1 M phosphate buffer solution (pH 7.4). After incubation overnight at room temperature with gentle shaking, the Au NP solution was centrifuged and
redispersed in 0.1 M NaNO3, 0.005 % Tween 20, 10 mM MOPS buffer (detection buffer, pH 7.5) after the supernatant was removed.

以上是我找到的mirkin 实验组 做DNA与纳米金颗粒连接的literature procedure。希望对你有帮助
3楼2013-04-01 10:34:26
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