J 2015

Activity of Na+/K+-activated Mg2+-dependent ATP hydrolase in the cell-free extracts of the sulfate-reducing bacteria Desulfovibrio piger Vib-7 and Desulfomicrobium sp. Rod-9

KUSHKEVYCH, Ivan, Roman FAFULA, Tomáš PARÁK a Milan BARTOŠ

Základní údaje

Originální název

Activity of Na+/K+-activated Mg2+-dependent ATP hydrolase in the cell-free extracts of the sulfate-reducing bacteria Desulfovibrio piger Vib-7 and Desulfomicrobium sp. Rod-9

Autoři

KUSHKEVYCH, Ivan, Roman FAFULA, Tomáš PARÁK a Milan BARTOŠ

Vydání

ACTA VETERINARIA BRNO, 2015, 0001-7213

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10600 1.6 Biological sciences

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 0.442

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000351657800001

Klíčová slova anglicky

ATPase activity; hydrogen sulfide; intestinal microbiocenosis; bowel diseases; ulcerative colitis

Štítky

Změněno: 6. 3. 2020 08:58, Mgr. Marie Šípková, DiS.

Anotace

V originále

The aim of our work was to study Na+/K+-activated Mg2+-dependent ATPase activity in cell-free extracts of the sulfate-reducing bacteria Desulfovibrio piger Vib-7 and Desulfomicrobium sp. Rod-9 isolated from the human large intestine, and to carry out the kinetic analysis of the enzyme reaction. The maximum ATPase activity for both bacterial strains at +35C was determined. The highest activities of the studied enzyme in the cell-free extracts of D. piger Vib-7 at pH 7.0 and Desulfomicrobium sp. Rod-9 at pH 6.5 were measured. Based on experimental data, the analysis of kinetic properties of the ATP-hydrolase reaction by the studied bacteria was carried out. The enzyme activity, initial (instantaneous) reaction rate (V0) and maximum rate of the ATPase reaction (Vmax) was significantly higher in D. piger Vib-7 cells than in Desulfomicrobium sp. Rod-9. Michaelis constants (Km) of the enzyme reaction for both bacterial strains were determined.