Porphyromonas gingivalis is highly sensitive to inhibitors of a proton-pumping ATPase.

Porphyromonas gingivalis is highly sensitive to inhibitors of a proton-pumping ATPase.
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牙龈卟啉单胞菌对质子泵 ATP 酶抑制剂高度敏感。

DOI:
10.1016/j.bbrc.2018.03.066
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发表时间:
2018
期刊:
Biochem. Biophys. Res. Commun
影响因子:
--
通讯作者:
Mayumi Nakanishi-Matsui.
Mayumi Nakanishi-Matsui.
中科院分区:
--
文献类型:
--
作者:
Mizuki Sekiya;Yu Shimoyama;Taichi Ishikawa;Minoru Sasaki;Masamitsu Futai;Mayumi Nakanishi-Matsui.

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牙龈卟啉单胞菌是一种引起牙周病的革兰氏阴性菌。细菌代谢氨基酸和肽以获得能量。跨质膜的离子梯度被认为是营养输入的关键。然而,目前还不清楚负责梯度的离子泵ATP酶是否是细菌生长所必需的。本文报道了质子载体和质子泵ATP酶抑制剂对牙龈卟啉单胞菌生长的抑制作用。在检测的化合物中,姜黄素和黄绿青霉素明显减少了细菌生长。此外,这些化合物抑制细菌膜中的ATP酶活性,其中A型质子泵ATP酶(A-ATP酶)位于膜中。提示姜黄素和黄绿青霉素通过抑制牙龈卟啉单胞菌膜上的A-ATP酶而抑制细菌生长。
Porphyromonas gingivalisis a well-known Gram-negative bacterium that causes periodontal disease. The bacterium metabolizes amino acids and peptides to obtain energy. An ion gradient across its plasma membrane is thought to be essential for nutrient import. However, it is unclear whether an ion-pumping ATPase responsible for the gradient is required for bacterial growth. Here, we report the inhibitory effect of protonophores and inhibitors of a proton-pumping ATPase on the growth ofP. gingivalis. Among the compounds examined, curcumin and citreoviridin appreciably reduced the bacterial growth. Furthermore, these compounds inhibited the ATPase activity in the bacterial membrane, where the A-type proton-pumping ATPase (A-ATPase) is located. This study suggests that curcumin and citreoviridin inhibit the bacterial growth by inhibiting the A-ATPase in theP. gingivalismembrane.
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