Genetic PEGylation.

Genetic PEGylation.
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DOI:
10.1371/journal.pone.0049235
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Ito Y
Ito Y
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Tada S;Andou T;Suzuki T;Dohmae N;Kobatake E;Ito Y

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将聚乙二醇(PEG)遗传地并入多肽中。含有终止反密码子的tRNA被含有PEG的氨基酸酰化,然后被翻译成与含有终止密码子的DNA序列相对应的多肽。所用PEG的分子量为170、500、700、1000和2000 Da,并通过质谱法确认翻译。PEG掺入率随着PEG分子量的增加而降低,并且分子量为1000 Da的PEG仅轻微掺入。虽然需要改进以提高该过程的效率,但这项研究证明了遗传PEG化的可能性。
Polyethylene glycol (PEG) was genetically incorporated into a polypeptide. Stop-anticodon-containing tRNAs were acylated with PEG-containing amino acids and were then translated into polypeptides corresponding to DNA sequences containing the stop codons. The molecular weights of the PEG used were 170, 500, 700, 1000, and 2000 Da, and the translation was confirmed by mass spectrometry. The PEG incorporation ratio decreased as the molecular weight of PEG increased, and PEG with a molecular weight of 1000 Da was only slightly incorporated. Although improvement is required to increase the efficiency of the process, this study demonstrates the possibility of genetic PEGylation.
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