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The distinguishing effects of low-intensity electromagnetic radiation of different extremely high frequencies on Enterococcus hirae: growth rate inhibition and scanning electron microscopy analysis.
Hovnanyan K, Kalantaryan V, Trchounian A. Hovnanyan K, et al. Among authors: trchounian a. Lett Appl Microbiol. 2017 Sep;65(3):220-225. doi: 10.1111/lam.12764. Epub 2017 Jul 27. Lett Appl Microbiol. 2017. PMID: 28609553
A low-intensity electromagnetic field of extremely high frequency has inhibitory and stimulatory effects on bacteria, including Enterococcus hirae. ...SIGNIFICANCE AND IMPACT OF THE STUDY: A stronger inhibitory effect of low-intensity electromagnetic field on Entero
A low-intensity electromagnetic field of extremely high frequency has inhibitory and stimulatory effects on bacteria, including Enter
Antifungal and antibacterial effects of newly created lactic acid bacteria associations depending on cultivation media and duration of cultivation.
Matevosyan L, Bazukyan I, Trchounian A. Matevosyan L, et al. Among authors: trchounian a. BMC Microbiol. 2019 May 17;19(1):102. doi: 10.1186/s12866-019-1475-x. BMC Microbiol. 2019. PMID: 31101075 Free PMC article.
A number of fungal and bacterial test-organisms, including pathogenic ones, were used. Pure LAB strain cultures were used as a control. ...
A number of fungal and bacterial test-organisms, including pathogenic ones, were used. Pure LAB strain cultures were used as a
Formate hydrogenlyase is needed for proton-potassium exchange through the F0F1-ATPase and the TrkA system in anaerobically grown and glycolysing Escherichia coli.
Trchounian A, Bagramyan K, Poladian A. Trchounian A, et al. Curr Microbiol. 1997 Oct;35(4):201-6. doi: 10.1007/s002849900239. Curr Microbiol. 1997. PMID: 9290059
Results allow the proposal that H2 production by FHL has a relationship with the H+-K+-exchange through a H+-K+-pump and via an H+-K+-antiporter. Formate and NADH can serve as a donor and an acceptor of reducing equivalent respectively, for operation of such …
Results allow the proposal that H2 production by FHL has a relationship with the H+-K+-exchange through a H+-K+-pump and via a …
Relationship of K+-uptaking system with H+-translocating ATPase in Enterococcus hirae, grown at a high or low alkaline pH.
Trchounian A, Kobayashi H. Trchounian A, et al. Curr Microbiol. 1998 Feb;36(2):114-8. doi: 10.1007/s002849900289. Curr Microbiol. 1998. PMID: 9425250
An energy-dependent increase of K+ pool in this bacterium, grown at a high or low alkaline pH, is assumed to occur through a K+ uptaking system, most probably the Trk. The latter functions in a closed relationship with the H+-translocating ATPase F0F1....
An energy-dependent increase of K+ pool in this bacterium, grown at a high or low alkaline pH, is assumed to occur through a K …
Fermenting Escherichia coli is able to grow in media of high osmolarity, but is sensitive to the presence of sodium ion.
Trchounian A, Kobayashi H. Trchounian A, et al. Curr Microbiol. 1999 Aug;39(2):109-14. doi: 10.1007/s002849900429. Curr Microbiol. 1999. PMID: 10398838
The growth rate and Na+ extrusion activity of a mutant having a functional NhaA were similar to that of the wild type and higher than that of a mutant with an active ChaA. A mutant defective for both NhaA and ChaA was unable to grow under anaerobic con …
The growth rate and Na+ extrusion activity of a mutant having a functional NhaA were similar to that of the wild type and high …
K+ influx by Kup in Escherichia coli is accompanied by a decrease in H+ efflux.
Zakharyan E, Trchounian A. Zakharyan E, et al. Among authors: trchounian a. FEMS Microbiol Lett. 2001 Oct 16;204(1):61-4. doi: 10.1111/j.1574-6968.2001.tb10863.x. FEMS Microbiol Lett. 2001. PMID: 11682179
In cells grown under fermentative conditions at pH 5.5, K+ influx by a wild-type strain upon hyper-osmotic stress at pH 5.5 was accompanied by a marked decrease in H+ efflux, with a 1:1 ratio of K+ to H+ fluxes. ...Similar results with a mutant defecti …
In cells grown under fermentative conditions at pH 5.5, K+ influx by a wild-type strain upon hyper-osmotic stress at pH 5.5 was accom …
The roles of hydrogenases 3 and 4, and the F0F1-ATPase, in H2 production by Escherichia coli at alkaline and acidic pH.
Bagramyan K, Mnatsakanyan N, Poladian A, Vassilian A, Trchounian A. Bagramyan K, et al. Among authors: trchounian a. FEBS Lett. 2002 Apr 10;516(1-3):172-8. doi: 10.1016/s0014-5793(02)02555-3. FEBS Lett. 2002. PMID: 11959127
Recently, an operon (hyf) encoding a potential second H2-evolving hydrogenase (Hyd-4) was identified in E. coli. In this study the roles of the hyc- and hyf-encoded systems in formate-dependent H2 production and Fdh-H activity have been investigated. ...These results sugge …
Recently, an operon (hyf) encoding a potential second H2-evolving hydrogenase (Hyd-4) was identified in E. coli. In this study the ro …
Effect of diethylsulphoxide on growth, survival and ion exchange of Escherichia coli.
Markarian SA, Poladyan AA, Kirakosyan GR, Trchounian AA, Bagramyan KA. Markarian SA, et al. Among authors: trchounian aa. Lett Appl Microbiol. 2002;34(6):417-21. doi: 10.1046/j.1472-765x.2002.01112.x. Lett Appl Microbiol. 2002. PMID: 12028422
Regulation of Escherichia coli formate hydrogenlyase activity by formate at alkaline pH.
Mnatsakanyan N, Vassilian A, Navasardyan L, Bagramyan K, Trchounian A. Mnatsakanyan N, et al. Among authors: trchounian a. Curr Microbiol. 2002 Oct;45(4):281-6. doi: 10.1007/s00284-002-3764-z. Curr Microbiol. 2002. PMID: 12192527
Redox sensing by Escherichia coli: effects of dithiothreitol, a redox reagent reducing disulphides, on bacterial growth.
Kirakosyan G, Bagramyan K, Trchounian A. Kirakosyan G, et al. Among authors: trchounian a. Biochem Biophys Res Commun. 2004 Dec 17;325(3):803-6. doi: 10.1016/j.bbrc.2004.10.119. Biochem Biophys Res Commun. 2004. PMID: 15541361
Escherichia coli is able to grow with a high rate under anaerobic conditions upon decrease in redox potential (E(h)) both either in slightly alkaline (pH 7.5) or acidic (pH 5.5) medium. ...A redox reagent dl-dithiothreitol (DTT) in a concentration of 3mM redu …
Escherichia coli is able to grow with a high rate under anaerobic conditions upon decrease in redox potential (E(h)) both either in s …
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