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 BARTOŠZákladní 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.