AQP1 Human Recombinant Protein

Aquaporins are a family of small integral membrane proteins related to the major intrinsic protein (MIP or AQP0). This gene encodes an aquaporin which functions as a molecular water channel protein. It is a homotetramer with 6 bilayer spanning domains and N-glycosylation sites. The protein physically resembles channel proteins and is abundant in erythrocytes and renal tubes. The gene encoding this aquaporin is a possible candidate for disorders involving imbalance in ocular fluid movement. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jun 2010]

AQP1: Forms a water-specific channel that provides the plasma membranes of red cells and kidney proximal tubules with high permeability to water, thereby permitting water to move in the direction of an osmotic gradient. Belongs to the MIP/aquaporin (TC 1.A.8) family.

Protein type: Transporter, aquaporin family; Membrane protein, integral; Transporter; Membrane protein, multi-pass

Chromosomal Location of Human Ortholog: 7p14

Cellular Component: nuclear membrane; integral to plasma membrane; basolateral plasma membrane; brush border membrane; apical part of cell; apical plasma membrane; cytoplasm; plasma membrane; basal plasma membrane; nerve terminal; nucleus; sarcolemma; brush border

Molecular Function: protein binding; ephrin receptor binding; potassium channel activity; water transporter activity; intracellular cGMP activated cation channel activity; ammonium transmembrane transporter activity; glycerol transmembrane transporter activity; potassium ion transmembrane transporter activity; nitric oxide transporter activity; water channel activity; transmembrane transporter activity; glycerol channel activity

Biological Process: cGMP biosynthetic process; glycerol transport; cerebrospinal fluid secretion; wound healing; cellular response to stress; water transport; carbon dioxide transport; negative regulation of caspase activity; pancreatic juice secretion; sensory perception of pain; positive regulation of saliva secretion; odontogenesis; positive regulation of fibroblast proliferation; hyperosmotic salinity response; nitric oxide transport; bicarbonate transport; multicellular organismal water homeostasis; cellular homeostasis; transmembrane transport; potassium ion transport; lipid digestion; lateral ventricle development; response to drug; cellular water homeostasis; secretory granule organization and biogenesis; glomerular filtration; ammonium transport; renal water transport; positive regulation of angiogenesis; camera-type eye morphogenesis; adrenocorticotropin hormone secretion; response to estrogen stimulus; establishment and/or maintenance of actin cytoskeleton polarity; renal water homeostasis; cell volume homeostasis; negative regulation of apoptosis

Disease: Blood Group--colton