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Protein synthesis in bacteriophage ghost-infected cells.

机译:蛋白质合成在噬菌体鬼魂感染细胞中。

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摘要

Escherichia coli B infected with T4 phage ghosts at 10 mM Mg2+ regains its protein synthesizing activity upon addition of ATP, GTP, and their generator to approximately 2% of the intact exponentially growing cells. In contrast to amino acid incorporation by intact cells, this system is sensitive to EDTA or low Mg2+. On the other hand, this system, differing from the regular cell-free system, does not respond to addition of soluble protein and ribonuclease. The ghost-infected cells were able to synthesize beta-galactosidase upon addition of the inducer isopropyl thiogalactoside. The initial rate of the induction was 2.6% of intact cells. For this induction, the addition of cyclic AMP, amino acids, ATP, GTP, UTP, CTP, and their generator was necessary. The induction of beta-galactosidase in these ghost-infected cells was very sensitive to the addition of EDTA, CaCl2, sulfhydryl blocking reagent, rifampin and chloramphenicol but insensitive to DNA synthesis inhibitors such as nalidixic acid and DNase.
机译:Escherichia Coli B在10mM Mg2 +的T4噬菌体鬼魂中感染,在加入ATP,GTP和它们的发电机时将其蛋白质合成活性恢复为完整的指数生长细胞的约2%。与完整细胞的氨基酸掺入相反,该系统对EDTA或低Mg2 +敏感。另一方面,该系统与常规无细胞系统不同,不响应添加可溶性蛋白质和核糖核酸酶。在加入诱导物异丙基硫代洛糖苷时,幽灵感染的细胞能够合成β-半乳糖苷酶。诱导的初始率为2.6%的完整细胞。对于这种诱导,需要添加循环AMP,氨基酸,ATP,GTP,UTP,CTP和它们的发电机。在这些幽灵感染的细胞中β-半乳糖苷酶的诱导对添加EDTA,CaCl 2,巯基阻断试剂,利福平和氯霉素非常敏感,但对DNA合成抑制剂如脱硫酸和DNase不敏感。

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  • 来源
    《Journal of Virology》 |1976年第1期|共8页
  • 作者

    K Takeishi; A Kaji;

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  • 收录信息 美国《科学引文索引》(SCI);
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