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首页> 外文期刊>Journal of bacteriology >Nucleotide sequence of pvdD, a pyoverdine biosynthetic gene from Pseudomonas aeruginosa: PvdD has similarity to peptide synthetases.
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Nucleotide sequence of pvdD, a pyoverdine biosynthetic gene from Pseudomonas aeruginosa: PvdD has similarity to peptide synthetases.

机译:pvdD(铜绿假单胞菌的pyoverdine生物合成基因)的核苷酸序列:PvdD与肽合成酶相似。

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Pseudomonas aeruginosa secretes a fluorescent siderophore, pyoverdine, when grown under iron-deficient conditions. Pyoverdine consists of a chromophoric group bound to a partly cyclic octapeptide. As a step toward understanding the molecular events involved in pyoverdine synthesis, we have sequenced a gene, pvdD, required for this process. The gene encodes a 2,448-residue protein, PvdD, which has a predicted molecular mass of 273,061 Da and contains two highly similar domains of about 1,000 amino acids each. The protein is similar to peptide synthetases from a range of bacterial and fungal species, indicating that synthesis of the peptide moiety of pyoverdine proceeds by a nonribosomal mechanism. The pvdD gene is adjacent to a gene, fpvA, which encodes an outer membrane receptor protein required for uptake of ferripyoverdine.
机译:在缺铁条件下生长时,铜绿假单胞菌会分泌一种荧光铁载体吡啶酮。 Pyoverdine由与部分环状八肽结合的发色基团组成。为了理解吡啶酮合成中涉及的分子事件,我们对这一过程所需的基因pvdD进行了测序。该基因编码2448个残基蛋白质PvdD,其预测分子量为273,061 Da,并包含两个高度相似的结构域,每个结构域约1,000个氨基酸。该蛋白质类似于来自一系列细菌和真菌物种的肽合成酶,这表明吡非定的肽部分的合成是通过非核糖体机制进行的。 pvdD基因与fpvA基因相邻,后者编码摄取ferripyoverdine所需的外膜受体蛋白。

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