Now showing items 11-20 of 100
Syntrophin-dependent expression and localization of Aquaporin-4 water channel protein
(National Academy of Sciences, 2001-11-20)
The Aquaporin-4 (AQP4) water channel contributes to brain water homeostasis in perivascular astrocyte endfeet where it is concentrated. We postulated that AQP4 is tethered at this site by binding of the AQP4 C terminus to ...
Aquaporin-1 Water Channel Expression in Human Kidney
(American Society for Nephrology, 1997-01)
The pattern of aquaporin-1 water channel protein (AQP1) expression in the human kidney was analyzed by immunocytochemistry using semi-thin and optimized high-resolution immunoelectron microscopy based on freeze-substituted ...
Identification, purification, and partial characterization of a novel Mr 28,000 integral membrane protein from erythrocytes and renal tubules
(American Society for Biochemistry and Molecular Biology, 1988-10-25)
A novel Mr 28,000 integral membrane protein ("28kDa") was identified in human erythrocytes and found entirely associated with the Triton X-100 insoluble membrane skeletons. Antibodies to 28kDa reacted strongly on immunoblots ...
Water channel properties of major intrinsic protein of lens
(American Society for Biochemistry and Molecular Biology, 1995-04-14)
The functions of major intrinsic protein (MIP) of lens are still unresolved; however the sequence homology with channel-forming integral membrane protein (CHIP) and other Aquaporins suggests that MIP is a water channel. ...
Defective Urinary Concentrating Ability Due to a Complete Deficiency of Aquaporin-1
(Massachusetts Medical Society, 2001-07-19)
Aquaporin-1, the archetypal water-channel protein,1 was initially identified in red cells and renal proximal tubular epithelium.2 The gene for aquaporin-1 (AQP1) on chromosome 7 colocalizes with the Colton blood-group ...
Defective cellular trafficking of lacrimal gland aquaporin-5 in Sjögren's syndrome
Dry eyes and dry mouth are clinical hallmarks of Sjögren's syndrome. We assessed the distribution of aquaporin-5 (AQP5) in lacrimal gland biopsy samples. Healthy controls and patients with Mikulicz's disease or non-Sjögren's ...
Appearance of Water Channels in Xenopus Oocytes Expressing Red Cell CHIP28 Protein
(American Association for the Advancement of Science, 1992-04-17)
Water rapidly crosses the plasma membrane of red blood cells (RBCs) and renal tubules through specialized channels. Although selective for water, the molecular structure of these channels is unknown. The CHIP28 protein is ...
Structural determinants of water permeation through aquaporin-1
(Nature Publishing Group, 2000-10-05)
Human red cell AQP1 is the first functionally defined member of the aquaporin family of membrane water channels. Here we describe an atomic model of AQP1 at 3.8A resolution from electron crystallographic data. Multiple ...
Mutations in aquaporin-1 in phenotypically normal humans without functional CHIP water channels
(American Association for the Advancement of Science, 1994-09-09)
The gene aquaporin-1 encodes channel-forming integral protein (CHIP), a member of a large family of water transporters found throughout nature. Three rare individuals were identified who do not express CHIP-associated ...
Deficient red-cell spectrin in severe, recessively inherited spherocytosis
(Massachusetts Medical Society, 1982-05-13)