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

scholarly journals Effects of Cobalt on Membrane ATPases, Oxidant, and Antioxidant Values in the Cerebrum and Cerebellum of Suckling Rats

2013 ◽  
Vol 154 (3) ◽  
pp. 387-395 ◽  
Author(s):  
Elmouldi Garoui ◽  
Ibtissem Ben Amara ◽  
Dorra Driss ◽  
Awatef Elwej ◽  
Semia Ellouze Chaabouni ◽  
...  
Keyword(s):  
Suckling Rats ◽  
Membrane Atpases

Dissolution of salt deposits by brine density flow

Geology ◽  
1980 ◽  
Vol 8 (2) ◽  
pp. 66 ◽  
Author(s):  
Roger Y. Anderson ◽  
Douglas W. Kirkland
Keyword(s):  
Density Flow ◽  
Salt Deposits

Tonoplast and plasma membrane ATPases from maize lines of high or low vigour

1992 ◽  
Vol 2 (2) ◽  
pp. 105-111 ◽  
Author(s):  
S. Sánchez-Nieto ◽  
R. Rodríguez-Sotres ◽  
P. González-Romo ◽  
I. Bernal-Lugo ◽  
M. Gavilanes-Ruíz
Keyword(s):  
Zea Mays ◽  
Plasma Membrane ◽  
Acid Phosphatase ◽  
Atpase Activity ◽  
Kinetic Analysis ◽  
Atp Hydrolysis ◽  
Membrane Atpases ◽  
Substrate Concentrations ◽  
Tonoplast Atpase ◽  
Specific Inhibitors

AbstractThe effectiveness of ATPase in germinated seed may play an important role in the vigour of germination. The activities of tonoplast and plasma membrane ATPases in two maize (Zea mays L.) lines with different vigour of germination were determined. ATP hydrolysis was measured in microsomal fractions from coleoptiles along with the responses to specific inhibitors for the plasma membrane, tonoplast and mitochondrial ATPases as well as for acid phosphatase. Nitrate-sensitive ATPase activity was 1.5–3.0 times lower in the low-vigour line than in the high-vigour line. Kinetic analysis of ATP hydrolysis at different substrate concentrations revealed the existence of two enzymes in the microsomal fractions of the two lines. The Vmax of enzyme 1 in the low-vigour line was a third of that in the high-vigour line. This enzyme was identified as the nitrate-sensitive or tonoplast ATPase on the basis of measurements of ATP hydrolysis in the presence of specific inhibitors at high (8.12mm) and low (0.77mm) ATP concentrations.

Migration Rates of Brine Inclusions in Single Crystals of Nacl

1981 ◽  
Vol 6 ◽  
Author(s):  
I-Ming Chou
Keyword(s):  
Radioactive Waste ◽  
Temperature Gradients ◽  
Spent Fuel ◽  
Ion Diffusion ◽  
Cold Side ◽  
Migration Rates ◽  
Permanent Storage ◽  
Salt Brine ◽  
Salt Deposits ◽  
High Level

Rock-salt deposits have been considered as a possible medium for the permanent storage of high-level radioactive wastes and spent fuel. Brine inclusions present in natural salt can migrate toward the waste if the temperature and the temperature gradients in the vicinity of the radioactive waste are large enough. This migration is due to the dissolution of salt at the hot side of the salt-brine interface, ion diffusion through the brine droplet, and the precipitation of salt at the cold side of the salt brine interface.

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