首页> 外文期刊>Journal of Parasitology >CLONORCHIS SINENSIS: MOLECULAR CLONING, ENZYMATIC ACTIVITY, AND LOCALIZATION OF YOLK FERRITIN
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CLONORCHIS SINENSIS: MOLECULAR CLONING, ENZYMATIC ACTIVITY, AND LOCALIZATION OF YOLK FERRITIN

机译:中华绒螯蟹:分子克隆,酶活性和黄铁素体的本地化

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摘要

Ferritin is an intracellular protein that is involved in iron metabolism. A cDNA clone of Clonorchis sinensis (CsFtn), 565 bp long, encoded a putative polypeptide of 166 amino acids. CsFtn cDNA revealed a putative loop–stem structure similar to iron-responsive element (IRE). CsFtn polypeptide appeared homologous to the ferritin of trematodes with high sequential identity. Phylogenetic tree analysis showed that CsFtn clustered with the ferritins of other flukes. Recombinant CsFtn protein was produced and purified from an Escherichia coli system, and immune mouse serum was raised against CsFtn. Recombinant CsFtn showed iron-uptake ability. In adult C. sinensis, CsFtn protein was found to localize in vitelline follicles and eggs. Based on these results, CsFtn cDNA is considered to encode a C. sinensis yolk ferritin.
机译:铁蛋白是一种参与铁代谢的细胞内蛋白。全长565 bp的华支睾吸虫(CsFtn)cDNA克隆编码一个166个氨基酸的推定多肽。 CsFtn cDNA揭示了一个类似于铁反应元件(IRE)的推定环-茎结构。 CsFtn多肽看起来与吸虫的铁蛋白同源,序列一致性高。系统进化树分析表明,CsFtn与其他吸虫的铁蛋白成簇。从大肠杆菌系统生产并纯化了重组CsFtn蛋白,并产生了针对CsFtn的免疫小鼠血清。重组CsFtn显示出铁吸收能力。在成年中华绒螯蟹中,发现CsFtn蛋白位于卵黄卵泡和卵中。根据这些结果,CsFtn cDNA被认为编码中华。卵黄铁蛋白。

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