Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Entire DC Network
Ddt Inhibition Of (Na+, K+)-Activated Atpase In Gill Tissue Of Fundulus Heteroclitus, Nancy Mccutcheon Slate
Ddt Inhibition Of (Na+, K+)-Activated Atpase In Gill Tissue Of Fundulus Heteroclitus, Nancy Mccutcheon Slate
Master's Theses
The DDT inhibition of (Na+, K+) - activated ATPase in gill preparations of the euryhaline teleost, Fundulus heteroclitus, was measured. The (Na+, K+) -activated ATPase was found to be sensitive to DDT, with 74.6% of the enzyme's specific activity inhibited by 20 ppm DDT. The (Mg++)-activated ATPase was also sensitive to inhibition bv DDT but not to the extent of the (Na+, K+) - activat ed ATPase . Due to previous work which showed that DDT antagonized valinomycin-induced K+ conductance in a synthetic membrane, the effect of K+ on DDT inhibition was examined kinetically. The Km for K+ in gill …
An Electrophoretic Comparison Of The Gill Plasma Membrane Proteins Of Freshwater And Saltwater-Adapted Killifish, Fundulus Heteroclitus, Earl Dean Hammit
An Electrophoretic Comparison Of The Gill Plasma Membrane Proteins Of Freshwater And Saltwater-Adapted Killifish, Fundulus Heteroclitus, Earl Dean Hammit
Master's Theses
A study was undertaken to compare proteins present in the gill membranes of freshwater and salt water adapted killifish, Fundulus heteroclitus. For this purpose, a method for the preparation or gill plasma membranes was developed. Polyacrylarnide gel electrophoresis indicated that the two types of gills possessed many membrane proteins in common. However, the freshwater adapted group possessed a single protein not found n the saltwater adapted group and the latter contained a protein not found in the freshwater adapted group.