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Identification of Genes Coding for Exported Proteins of Actinobacillus actinomycetemcomitans

机译:放线放线放线杆菌的出口蛋白编码基因的鉴定

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Random fusions of genomic DNA fragments to a partial gene encoding a signal sequence-deficient bacterial alkaline phosphatase were utilized to screen for exported proteins of Actinobacillus actinomycetemcomitans in Escherichia coli. Twenty-four PhoA+ clones were isolated and sequenced. Membrane localization signals in the form of signal sequences were deduced from most of these sequences. Several of the deduced amino acid sequences were found to be homologous to known exported or membrane-associated proteins. The complete genes corresponding to two of these sequences were isolated from an A. actinomycetemcomitans lambda phage library. One gene was found to be homologous to the outer membrane lipoprotein LolB. The second gene product had homology with a Haemophilus influenzae protein and was localized to the inner membrane of A. actinomycetemcomitans.
机译:利用基因组DNA片段与编码信号序列不足的细菌碱性磷酸酶的部分基因的随机融合,筛选出大肠杆菌放线放线杆菌中的输出蛋白。分离并测序了24个PhoA + 克隆。从大多数序列中推导出信号序列形式的膜定位信号。发现一些推导的氨基酸序列与已知的输出或膜相关蛋白同源。从 A中分离出与这些序列中的两个相对应的完整基因。放线菌λ噬菌体文库。发现一个基因与外膜脂蛋白LolB同源。第二个基因产物与流感嗜血杆菌蛋白具有同源性,并位于 A的内膜。放线菌

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