The study is intended to isolate the water permeable membrane units that make the urinary plasma membrane permeable to water in response to vasopressin. Because it is well characterized and easy to work with, the toad urinary bladder is used as the source of the channels. Membrane proteins are labeled covalently with radioactive iodine to identify proteins in the plasma membrane in the presence but not in the absence of stimulation by vasopressin. Following withdrawal of vasopressin, endocytosed membrane is labeled using an intracellular labeling technique. Finally, a cell fraction enriched in endocytosed membrane is isolated and used to prepare monoclonal antibodies.

Agency
National Institute of Health (NIH)
Institute
National Heart, Lung, and Blood Institute (NHLBI)
Type
Intramural Research (Z01)
Project #
1Z01HL001276-04
Application #
3942813
Study Section
Project Start
Project End
Budget Start
Budget End
Support Year
4
Fiscal Year
1987
Total Cost
Indirect Cost
Name
U.S. National Heart Lung and Blood Inst
Department
Type
DUNS #
City
State
Country
United States
Zip Code