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zhjia金蟲 (初入文壇)
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[求助]
你們做蛋白質(zhì)同源進(jìn)化樹一般怎么選序列?
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初次做進(jìn)化樹遇到不少疑問 1.一條蛋白序列用blastp找到400多條序列,要選多少個(gè)比較合適呢,而且選擇的原則是什么啊? 2.有些序列一樣但是又被標(biāo)記成幾條序列是怎么回事? 3.怎么看是不是全長序列,假想蛋白要不要選? |

新蟲 (小有名氣)
新蟲 (小有名氣)
至尊木蟲 (著名寫手)
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1. about 30-50 sequences, actually it mainly depends on taxonomy. 2. It could be several reasons, e.g. different splicing pattern 3. I always use curated proteins (from swissprot), not predicted (from trembl). full length is not always important and can be found in the description field |
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