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[求助]
文獻所示啟動子區(qū)共有結(jié)合序列 T K R Y什么意思
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如題所示 在文獻中查某一轉(zhuǎn)錄因子結(jié)合位點時,會給出TRKKTRY 有的還含有W或者N,這些字母均不是ATGC代表什么意思啊,感覺像是某一種偏好性,到底是代表什么呢? 哪位大俠解釋一下 |
榮譽版主 (知名作家)
榮譽版主 (知名作家)
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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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