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朽木之痕

铁虫 (小有名气)

[求助] 碱基成分分析所用软件

我想分析一段序列的碱基成分,不知道用什么软件或是在线网站,各位大哥大姐帮忙一下啊。。。最好有步骤。
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li059059

铜虫 (小有名气)

【答案】应助回帖


朽木之痕: 金币+1, ★★★很有帮助 2012-05-10 11:13:27
打开mega,file-open a file -选择你要分析的序列,然后他会询问how would you like to open this fasta file,选择“analyze”,后面还会继续询问是dna还是蛋白质序列,你自己看情况选择,最后你打开sequence data explorer ,点击stastics-Nucleotide compostion或者Protein compostion,它会生成一个excel表,里面有统计结果
6楼2012-05-10 10:18:43
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robertorun

金虫 (正式写手)

【答案】应助回帖

★ ★
感谢参与,应助指数 +1
amisking: 金币+2, 鼓励发帖帮助解答问题。 2012-05-05 20:15:07
grep "^[^>]"  ...... | perl -e 'while(<>{$count_N+=s/N//g; $count_A+=s/A//g; $count_T+=s/T//g; $count_C+=s/C//g; $count_G+=s/G//g; } ; $count_sum=$count_G+$count_C+$count_A+$count_T; $count_GC=$count_G+$count_C; $GC_content=$count_GC/$count_sum ; $count_all=$count_sum+$count_N; $N_content=$count_N/$count_all ; print "N:"."$count_N"."\nA:"."$count_A"."\nT:"."$count_T"."\nC:"."$count_C"."\nG:"."$count_G"."\nAll:"."$count_all"."\nN_content:"."$N_content"."\nGC:"."$count_GC"."\nGC_content:"."$GC_content" ;'

grep "^[^>]" ....... | sed -e 's/./&\n/g' | sort | uniq -c | sort -n (速度慢)

以上两段命令都可以轻松解决,你的序列少,用第二个吧
2楼2012-05-05 14:32:11
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朽木之痕

铁虫 (小有名气)

引用回帖:
2楼: Originally posted by robertorun at 2012-05-05 14:32:11:
grep "^"  ...... | perl -e 'while(<>{$count_N+=s/N//g; $count_A+=s/A//g; $count_T+=s/T//g; $count_C+=s/C//g; $count_G+=s/G//g; } ; $count_sum=$count_G+$count_C+$count_A+$count_T; $ ...

在哪里用那两段命令。。用什么软件进行序列分析
3楼2012-05-05 20:38:43
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li059059

铜虫 (小有名气)

可以用mega来进行分析
4楼2012-05-07 14:35:41
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