Tetracycline resistance element of pBR322 mediates potassium transport.
نویسندگان
چکیده
The tetracycline resistance element of plasmid pBR322 partially complements the potassium transport defect of Escherichia coli K-12 mutants having markedly impaired K+ transport. The plasmid increases K+ transport. The Tn10 element does not result in increased transport, demonstrating that the effect is not general for elements that increase resistance to tetracycline.
منابع مشابه
Functional importance and local environments of the cysteines in the tetracycline resistance protein encoded by plasmid pBR322.
The properties of the cysteines in the pBR322-encoded tetracycline resistance protein have been examined. Cysteines are important but not essential for tetracycline transport activity. None of the cysteines reacted with biotin maleimide, suggesting that they are shielded from the aqueous phase or reside in a negatively charged local environment.
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ورودعنوان ژورنال:
- Journal of bacteriology
دوره 160 3 شماره
صفحات -
تاریخ انتشار 1984