噬菌体尾部组件。3. 合成蝶酰六谷氨酸在T4D尾板组装中的应用。
Bacteriophage tail components. 3. Use of synthetic pteroyl hexaglutamate for T4D tail plate assembly.
作者信息
Kozloff L M, Lute M, Crosby L K
出版信息
J Virol. 1970 Dec;6(6):754-9. doi: 10.1128/JVI.6.6.754-759.1970.
Abstract
The assembly of T4D tail plates occurring during in vitro complementation reactions was found to be stimulated by pteroyl hexaglutamate. Neither the pteroyl pentaglutamate nor the pteroyl heptaglutamate substituted for the hexaglutamate. A small stimulation of the rate and amount of T4D tail plate assembly was observed in untreated extracts. A greater stimulation occurred when activated charcoal-treated bacterial extracts were used. Charcoal treatment inhibited complementation only when no preformed tail plates were present in the extracts, and the inhibition was reversed by the addition of 9 x 10(-6)m chemically synthesized pteroyl hexaglutamate. The stimulation is apparently due to a requirement for the pteroyl hexaglutamate for tail plate assembly.
摘要
发现在体外互补反应过程中，四型噬菌体（T4D）尾板的组装受到蝶酰六谷氨酸的刺激。蝶酰五谷氨酸和蝶酰七谷氨酸都不能替代六谷氨酸。在未处理的提取物中观察到T4D尾板组装速率和数量有轻微刺激。当使用经活性炭处理的细菌提取物时，刺激作用更强。活性炭处理仅在提取物中不存在预先形成的尾板时才抑制互补作用，并且通过添加9×10⁻⁶m化学合成的蝶酰六谷氨酸可逆转这种抑制作用。这种刺激显然是由于尾板组装需要蝶酰六谷氨酸。
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本文引用的文献
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Some steps in the assembly of bacteriophage T4.噬菌体T4组装的一些步骤。
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Evidence that bacteriophage-induced dihydrofolate reductase in a viral gene product.有证据表明噬菌体诱导的二氢叶酸还原酶是一种病毒基因产物。
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Bacteriophage tail components. II. Dihydrofolate reductase in T4D bacteriophage.噬菌体尾部成分。II. T4D噬菌体中的二氢叶酸还原酶。
J Virol. 1970 Jun;5(6):740-53. doi: 10.1128/JVI.5.6.740-753.1970.
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