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Email: info@nsjbio.com
- Tel: 858.663.9055
- Email: info@nsjbio.com
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AQP-4 Antibody recognizes aquaporin 4 (AQP4), an integral membrane water channel responsible for rapid and selective movement of water across cell membranes. AQP4 belongs to the aquaporin family of channel proteins and contributes to the regulation of tissue water balance and cellular responses to osmotic changes. The protein is also historically known as the mercurial-insensitive water channel, reflecting its functional distinction from aquaporins whose water permeability is inhibited by mercury compounds.
AQP4 is the predominant water channel in the central nervous system and is particularly abundant in astrocytes. Within the brain, AQP4 is highly concentrated at astrocytic endfeet surrounding blood vessels and at other interfaces involved in water exchange. This polarized localization supports important roles in brain water homeostasis, extracellular fluid regulation, and the movement of water between vascular and neural compartments. AQP4 is also expressed outside the nervous system, where it participates in physiological water transport in several epithelial and other specialized tissues.
AQP4 exists primarily as the M1 and M23 isoforms, which arise through alternative translation initiation. Individual AQP4 proteins assemble into tetramers within the plasma membrane, while M23-rich tetramers can further organize into higher-order orthogonal arrays of particles. Changes in the expression, localization, or organization of AQP4 are studied in relation to cerebral edema, tissue injury, inflammation, and other conditions involving disturbed fluid homeostasis. AQP4 is also the major autoantigen in neuromyelitis optica spectrum disorder, where pathogenic antibodies recognize extracellular regions of the channel.
This Mercurial-Insensitive Water Channel Antibody is a rabbit polyclonal generated against a recombinant fragment corresponding to amino acids 247-323 of human AQP4. The immunogen encompasses a C-terminal region of the protein and provides a reagent for investigating AQP4 expression and water-channel biology. NSJ Bioreagents supplies this antibody for research use only.
An AQP-4 Antibody can be used to investigate aquaporin 4 expression and its relationship to membrane water transport, astrocyte biology, tissue fluid regulation, and physiological or pathological changes in water homeostasis.
Optimal dilution of the AQP-4 Antibody / Mercurial-Insensitive Water Channel Antibody should be determined by the researcher.
Recombinant human protein (amino acids L247-V323) was used as the immunogen for the Aquaporin 4 / AQP-4 antibody.
After reconstitution, the Aquaporin 4 / AQP-4 antibody can be stored for up to one month at 4oC. For long-term, aliquot and store at -20oC. Avoid repeated freezing and thawing.
AQP4 antibody, aquaporin 4 antibody, aquaporin-4 antibody, mercurial insensitive water channel antibody, MIWC antibody, WCH4 antibody
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