» Articles » PMID: 6130061

Transmembrane Electrical Potential in Rickettsia Prowazekii and Its Relationship to Lysine Transport

Overview
Journal J Bacteriol
Specialty Microbiology
Date 1983 Feb 1
PMID 6130061
Citations 11
Authors
Affiliations
Soon will be listed here.
Abstract

The transmembrane electrical potential (delta psi) generated by Rickettsia prowazekii metabolizing glutamic acid or ATP was determined by flow dialysis with the lipophilic cation tetraphenylphosphonium and with lysine. At pH 7.0, the rickettsiae generated a delta psi as measured by tetraphenylphosphonium distribution of 90 mV. Under similar conditions, cells of R.prowazekii concentrated lysine to a gradient indicating a delta psi of 90 mV. Energy-starved cells of R. prowazekii were able to utilize exogenously supplied ATP as well as glutamic acid to generate a delta psi of 110 mV at pH 8.0. Lysine transport was markedly affected by environmental pH, the optimum pH ranging from 8.0 to 8.5. delta psi as measured with tetraphenyl-phosphonium was similarly affected in this system, with values ranging from 70 mV at pH 6.0 to 100 mV at pH 8.0. Respiration rates were also affected by the external pH, with a maximum rate of 28 nmol of O2 consumed per min per mg of rickettsial protein occurring at pH 8.0. The pH effects were readily reversible and with a rapid onset.

Citing Articles

Wholly ! Reconstructed Metabolic Profile of the Quintessential Bacterial Parasite of Eukaryotic Cells.

Driscoll T, Verhoeve V, Guillotte M, Lehman S, Rennoll S, Beier-Sexton M mBio. 2017; 8(5).

PMID: 28951473 PMC: 5615194. DOI: 10.1128/mBio.00859-17.


Dual mechanisms of metabolite acquisition by the obligate intracytosolic pathogen Rickettsia prowazekii reveal novel aspects of triose phosphate transport.

Frohlich K, Audia J J Bacteriol. 2013; 195(16):3752-60.

PMID: 23772074 PMC: 3754563. DOI: 10.1128/JB.00404-13.


Rickettsia prowazekii uses an sn-glycerol-3-phosphate dehydrogenase and a novel dihydroxyacetone phosphate transport system to supply triose phosphate for phospholipid biosynthesis.

Frohlich K, Roberts R, Housley N, Audia J J Bacteriol. 2010; 192(17):4281-8.

PMID: 20581209 PMC: 2937374. DOI: 10.1128/JB.00443-10.


Enlightening energy parasitism by analysis of an ATP/ADP transporter from chlamydiae.

Trentmann O, Horn M, Terwisscha van Scheltinga A, Neuhaus H, Haferkamp I PLoS Biol. 2007; 5(9):e231.

PMID: 17760504 PMC: 1951785. DOI: 10.1371/journal.pbio.0050231.


Two nucleotide transport proteins in Chlamydia trachomatis, one for net nucleoside triphosphate uptake and the other for transport of energy.

Tjaden J, Winkler H, Schwoppe C, Van der Laan M, Mohlmann T, Neuhaus H J Bacteriol. 1999; 181(4):1196-202.

PMID: 9973346 PMC: 93497. DOI: 10.1128/JB.181.4.1196-1202.1999.


References
1.
Markwell M, Haas S, Bieber L, Tolbert N . A modification of the Lowry procedure to simplify protein determination in membrane and lipoprotein samples. Anal Biochem. 1978; 87(1):206-10. DOI: 10.1016/0003-2697(78)90586-9. View

2.
Myers W, Provost P, WISSEMAN Jr C . Permeability properties of Rickettsia mooseri. J Bacteriol. 1967; 93(3):950-60. PMC: 276540. DOI: 10.1128/jb.93.3.950-960.1967. View

3.
Harold F . Conservation and transformation of energy by bacterial membranes. Bacteriol Rev. 1972; 36(2):172-230. PMC: 408323. DOI: 10.1128/br.36.2.172-230.1972. View

4.
Maloney P . Coupling between H+ entry and ATP formation in Escherichia coli. Biochem Biophys Res Commun. 1978; 83(4):1496-501. DOI: 10.1016/0006-291x(78)91390-6. View

5.
Winkler H . Rickettsial permeability. An ADP-ATP transport system. J Biol Chem. 1976; 251(2):389-96. View