镉离子对耐镉和镉敏感金黄色葡萄球菌中与电子传递偶联的ATP合成的影响
Effect of Cd2+ on ATP synthesis coupled to electron transfer in cadmium-resistant and -sensitive Staphylococcus aureus.
作者信息
Tynecka Z, Malm A, Zajac J
机构信息
Department of Pharmaceutical Microbiology, Medical Academy, Lublin, Poland.
出版信息
Acta Biochim Pol. 1990;37(1):121-4.
PMID:2087901
Abstract
In the Cd2(+)-resistant Staphylococcus aureus 17810R which contains the plasmid-coded Cd2+ efflux system, accumulation of Cd2+ was highly reduced. Consequently, neither respiration nor ATP synthesis coupled to electron transfer were inhibited. The plasmidless S. aureus strain 17810S accumulated Cd2+ via the Mn2+ porter down the membrane potential (delta phi) which resulted in inhibition of respiration and of ATP synthesis.
摘要
在含有质粒编码的Cd2+外排系统的耐Cd2+金黄色葡萄球菌17810R中，Cd2+的积累显著减少。因此，呼吸作用和与电子传递偶联的ATP合成均未受到抑制。无质粒的金黄色葡萄球菌菌株17810S通过Mn2+转运体顺着膜电位（Δφ）积累Cd2+，这导致了呼吸作用和ATP合成受到抑制。
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