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[交流]
【求助/交流】有關熒光原位雜交(FISH)的探針序列中的字母W是什么意思。
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| 文獻中看到某種細菌的探針,但是發(fā)現(xiàn)字母里面有個W,不是只有A、G、T、C四種核苷酸的嗎?請大家?guī)臀医忉屢幌掳?nbsp; CCGTCATCTACWCAGGGTATTAAC |
» 搶金幣啦!回帖就可以得到:
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樓上正解,呵呵~W=A,T,U 附個代碼表: IUPAC ambiguity codes are single-letter codes for nucleotides and amino acids established by the International Union of Pure and Applied Chemistry. This nomenclature is used for specifying Pattern Search parameters. Nucleotides (Cornish-Bowden, 1985): Symbol Meaning G G A A T T or U C C U U or T R G or A Y T, U or C M A or C K G, T or U S G or C W A, T or U H A, C, T or U B G, T, U or C V G, C or A D G, A, T or U N G, A, T, U or C Amino Acids: 1-Letter Symbol 3-Letter Symbol Meaning A Ala Alanine R Arg Arginine N Asn Asparagine D Asp Aspartic acid C Cys Cysteine Q Gln Glutamine E Glu Glutamic acid G Gly Glycine H His Histidine I Ile Isoleucine L Leu Leucine K Lys Lysine M Met Methionine F Phe Phenylalanine P Pro Proline S Ser Serine T Thr Threonine W Trp Tryptophan Y Tyr Tyrosine V Val Valine B Asx Asparagine or Aspartic acid Z Glx Glutamine or Glutamic acid X ??? Unknown Cornish-Bowden, A. (1985). Nomenclature for incompletely specified bases in nucleic acid sequences: recommendations 1984. Nuc. Acids Res. 13:3021-3030. |
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