24小时热门版块排行榜    

查看: 1708  |  回复: 10
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

redrover

禁虫 (小有名气)

本帖内容被屏蔽

已阅   关注TA 给TA发消息 送TA红花 TA的回帖

redrover

禁虫 (小有名气)

本帖内容被屏蔽

3楼2016-01-11 20:32:44
已阅   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 11 个回答

redrover

禁虫 (小有名气)

本帖内容被屏蔽

2楼2016-01-11 20:27:13
已阅   关注TA 给TA发消息 送TA红花 TA的回帖

安静de执着14

新虫 (著名写手)

【答案】应助回帖


感谢参与,应助指数 +1
myprayer: 金币+1, 赠人玫瑰,手有余香,分子生物期待您更多精彩。 2016-01-13 18:13:24
你好,请问你是指的是16s rDNAPCR扩增吗?我以前做过,因为引物是通用引物,只要有DNA模板都能扩增出来的。
4楼2016-01-11 21:12:39
已阅   关注TA 给TA发消息 送TA红花 TA的回帖

反应链

新虫 (正式写手)


myprayer: 金币+1, 赠人玫瑰,手有余香,分子生物期待您更多精彩。 2016-01-13 18:13:33
Your results have been identified the key problem, which was the DNA sample containing high level of polysaccharides that binding or co-precipitate with DNA. The evidences were 1) positive amplification at low concentration which could reduce the contaminates, 2) highlight strength above the agarose-gel well which was the high level of polysaccharides that binding or co-precipitate with DNA.

Therefore, you can purify your DNA samples using high salt TE protocol below.

1. Add 400 ul of high salt TE (1M NaCl in TE buffer) +2 ul of RNaseA (10mg/mL)
2. Incubate at 37 degrees Celsiu for one hour, mixing from time to time until the pellet dissolves
3. add 2 volume of cold 100% ethanol, put at -20 degree Celsiu for 20 minutes
4. Spin at max speed for 15 minutes
5. Wash pellet with 1ml of cold 75% ethanol
6. Spin at max speed for 5 minutes
7. Repeat wash
8. Dry pellet and resuspend in 100 ul of TE (or more, as you prefer)

Or you can re-extract your DNA samples with 3% CTAB DNA extraction protocol, which separates high quality DNA in our labs.
16S扩不出来,到底是模板问题还是引物问题?
3% CTAB DNA Extraction Protocol.jpg

» 本帖附件资源列表

  • 欢迎监督和反馈:小木虫仅提供交流平台,不对该内容负责。
    本内容由用户自主发布,如果其内容涉及到知识产权问题,其责任在于用户本人,如对版权有异议,请联系邮箱:xiaomuchong@tal.com
  • 附件 1 : 3%_CTAB_DNA_Extraction_Protocol.pdf
  • 2016-01-11 21:42:18, 50.16 K
5楼2016-01-11 21:42:20
已阅   关注TA 给TA发消息 送TA红花 TA的回帖
信息提示
请填处理意见