[討論] oligo/primer的blast工具演算方法
最近和實驗室同學討論序列alignment的問題,
NCBI,CLC這些工具程式提供的alignment都是如同word搜尋一樣,
只能夠找出"有連續鹼基相符"的位置,例如:
ATTCGGATTCGGATTCGG (<---一個primer)
結果1: ATTCGGATTCGGATTCGG (<---target序列)
結果2: ---CGGATTCG------- (<---非專一binding)
結果3: -------TTCGGATTCG- (<---非專一binding)
我們好奇的是,假使有段序列是斷斷續續與primer相符的,要怎樣找出來?
例如:
ATTCGGATTCGGATTCGG
ATT-GGA-TCG-ATT-GG <---用blastn無法被偵測出來
上面這個例子我實際拿NCBI的程式去run,結果完全抓不到這種有gaps的結果
有試圖調整過程式演算法的係數,也沒有什麼改變
有人研究過這個問題嗎?
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※ 編輯: FDynasty 來自: 140.112.52.126 (01/21 16:08)
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