Truncated hemoglobin o of Mycobacterium tuberculosis: the oligomeric state change and the interaction with membrane components.
Truncated hemoglobin o of Mycobacterium tuberculosis: the oligomeric state change and the interaction with membrane components.
复制标题
结核分枝杆菌的截短血红蛋白 o:寡聚状态变化及其与膜成分的相互作用。
DOI:
10.1016/j.bbrc.2004.02.170
复制
发表时间:
2004
影响因子:
3.1
通讯作者:
Chang,Zengyi
中科院分区:
文献类型:
--
作者:
Liu,Chong;He,Yuan;Chang,Zengyi
Being an obligate aerobe, the Mycobacterium tuberculosis cells would have to evolve a mechanism to collect and deliver the hardly available O2to survive in granulomas and to maintain the low level of respiration during latency. The M. tuberculosis truncated hemoglobin o (trHbO), when heterologously expressed in Escherichia coli cells, was found to significantly enhance the cellular respiration and cell growth. This study was undertaken in an attempt to understand the molecular details for trHbO to promote the cellular respiration, focusing on the ways through which trHbO is recruited to the cell membrane and O2molecules are delivered. Our data demonstrate that the trHbO protein is able to promote the growth of E. coli cells in a fashion that depends on the presence of the respiratory chain terminal oxidase cytochrome o complex (or Cyo complex). The trHbO protein appears to interact with the Cyo B subunit of the Cyo complex directly, likely in a dynamic manner. The trHbO is also able to bind membrane lipids in a non-specific way, during the process electrostatic and hydrophobic interactions both likely exist. Besides, binding with membrane induces the dissociation of trHbO from dimers to monomers. In light of these observations, a hypothesis was made to explain how trHbO might serve as an O2collector and/or reservoir for M. tuberculosis cells under O2-limiting or lacking conditions.
登录
查看更多内容
影响因子:
4.8
作者:
K. Saiki;H. Nakamura;T. Mogi;Y. Anraku
通讯作者:
Y. Anraku
影响因子:
3.2
作者:
D. R. Hill;T. Belbin;M. Thorsteinsson;Deeni Bassam;S. Brass;A. Ernst;P. Boger;H. Paerl;M. E. Mulligan;M. Potts
通讯作者:
M. Potts
DOI:
10.1074/jbc.r100058200
发表时间:
2002-01
期刊:
The Journal of Biological Chemistry
影响因子:
--
作者:
J. Wittenberg;M. Bolognesi;B. Wittenberg;M. Guertin
通讯作者:
J. Wittenberg;M. Bolognesi;B. Wittenberg;M. Guertin
DOI:
10.1111/j.1432-1033.1996.0779r.x
发表时间:
1996-12-15
期刊:
EUROPEAN JOURNAL OF BIOCHEMISTRY
影响因子:
--
作者:
Couture, M;Guertin, M
通讯作者:
Guertin, M
DOI:
10.1016/0005-2795(77)90116-7
发表时间:
1977
期刊:
Biochimica et Biophysica Acta
影响因子:
--
作者:
K. Imai;T. Yonetani
通讯作者:
T. Yonetani