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Phylogenesis of prion protein

机译:ion病毒蛋白的系统发育

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We have reconstructed the phy-logeny for various mammal species based on the sequence of the prion protein gene. By tracing the pattern of amino-acid substitutions through the phylogeny, we have identified two pairs of derived substitutions uniquely shared by cattle (Bos taunts) and the hominoids. Although we have no specific explanation for these events, a phylogenetic analysis can help to indicate their significance. Two factors make the result compelling: the probability that it occurred by chance is estimated to be less than 1.2x10~(-4); and the substitutions, although of a conservative nature, occur in a region of the gene postulated to be involved in the acquisition of prion diseases.
机译:我们已经基于pr病毒蛋白基因的序列重建了各种哺乳动物的phy-logeny。通过追溯系统发育中氨基酸取代的模式,我们确定了两对被牛(Bos嘲讽)和类人动物共有的衍生取代。尽管我们没有这些事件的具体解释,但系统发育分析可以帮助表明它们的重要性。有两个因素使结果令人信服:估计偶然发生的概率小于1.2x10〜(-4);取代虽然具有保守性,但发生在假定与the病毒疾病的发生有关的基因区域。

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