scholarly journals Polyamine analysis of methanogens, thermophiles and extreme halophiles belonging to the domain Archaea

2007 ◽  
Vol 6 (1) ◽  
pp. 25-31 ◽  
Author(s):  
K Hamana ◽  
R Hosoya ◽  
T Itoh
Keyword(s):  
Extreme Halophiles ◽  
Polyamine Analysis

scholarly journals Comparison of membrane ATPases from extreme halophiles isolated from ancient salt deposits

1993 ◽  
Vol 23 (1) ◽  
pp. 53-64 ◽  
Author(s):  
Helga Stan-Lotter ◽  
Michael Sulzner ◽  
Eva Egelseer ◽  
Cynthia F. Norton ◽  
Lawrence I. Hochstein
Keyword(s):  
Extreme Halophiles ◽  
Membrane Atpases ◽  
Salt Deposits

Highly active and stable protease production by an extreme halophilic archaeon Haloarcula sp. TG1 isolated from Lake Tuz, Turkey

2017 ◽  
Vol 42 (3) ◽  
Author(s):  
Büşra Abanoz ◽  
Sezer Okay ◽  
Aslıhan Kurt-Kızıldoğan
Keyword(s):  
Protease Activity ◽  
Protease Production ◽  
Extreme Conditions ◽  
Salt Mine ◽  
Producer Strain ◽  
Extreme Halophiles ◽  
Highly Active ◽  
Protease Enzyme ◽  
Wide Range

AbstractObjective:Isolation of halophilic microorganisms from Çankırı salt mine and Lake Tuz in Turkey to explore versatile protease producers for industry and characterization of protease enzyme from the best protease producer among the isolated strains.Methods:Extreme halophiles were isolated from salt samples of Çankırı salt mine and Lake Tuz. Their protease activities were determined. The isolate with the highest protease activity was characterized. Its protease activity was evaluated in different NaCl concentrations, temperature and pH ranges, and in the presence of different inhibitors and metals. Thermostability and pH stability were also determined.Results:The highest protease producer strain was identified asConclusion:Due to the high activity and stability over a wide range of extreme conditions,

Isolation of the extreme halophiles from rock salt

2010 ◽  
Author(s):  
K. Watanabe ◽  
J. Ueda ◽  
Y. Sasakawa ◽  
M. Watarai ◽  
K. Nakamura ◽  
...  
Keyword(s):  
Rock Salt ◽  
Extreme Halophiles

EFFECTS OF SODIUM AND POTASSIUM CHLORIDE ON CERTAIN ENZYMES OF MICROCOCCUS HALODENITRIFICANS AND PSEUDOMONAS SALINARIA

1956 ◽  
Vol 2 (6) ◽  
pp. 599-606 ◽  
Author(s):  
R. M. Baxter ◽  
N. E. Gibbons
Keyword(s):  
Potassium Chloride ◽  
Cytochrome Oxidase ◽  
Salt Content ◽  
Lactic Dehydrogenase ◽  
Extreme Halophile ◽  
Optimal Conditions ◽  
Moderate Halophile ◽  
Extreme Halophiles ◽  
High Concentrations ◽  
Sodium And Potassium

The isocitric, succinic, malic, and lactic dehydrogenases and cytochrome oxidase from Pseudomonas salinaria, an extreme halophile, are most active in high concentrations of sodium or potassium chloride. The lactic dehydrogenase and cytochrome oxidase of Micrococcus halodenitrificans are also more active at high concentrations of salt, but the isocitric, succinic, malic, α-ketoglutaric, and glutamic dehydrogenases of this moderate halophile are most active at much lower concentrations. It is concluded that the extreme halophiles have a high intracellular salt content. It is suggested that M. halodenitrificans maintains an intracellular salt concentration of about 0.5 M under optimal conditions for growth and that cytochrome oxidase is important in maintaining this level against a concentration gradient.

scholarly journals Polyamine concentrations in bone marrow aspirates of children with leukemia and other malignancies

Blood ◽  
1976 ◽  
Vol 47 (4) ◽  
pp. 695-701
Author(s):  
O Rennert ◽  
T Miale ◽  
J Shukla ◽  
D Lawson ◽  
J Frias
Keyword(s):  
Bone Marrow ◽  
High Pressure ◽  
Liquid Chromatography ◽  
High Pressure Liquid Chromatography ◽  
Marked Elevation ◽  
Chromatography Analysis ◽  
Polyamine Analysis

High-pressure liquid chromatography analysis of polyamines in bone narrow from leukemic and nonleukemic subjects demonstrated increased concentrations of putrescine, spermidine, and spermine associated with increased cellularity. The most striking abnormality was the marked elevation of putrescine. Bone marrow polyamine analysis may be an adjunct for evaluation of leukemia patients.

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