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AB3594

Sigma-Aldrich

Anti-Aquaporin 4 Antibody, CT

Chemicon®, from rabbit

Synonym(s):
Mercurial-Insensitive Water Channel
eCl@ss:
32160702
NACRES:
NA.41

biological source

rabbit

Quality Level

antibody form

affinity isolated antibody

antibody product type

primary antibodies

clone

polyclonal

species reactivity

human, rat, mouse

manufacturer/tradename

Chemicon®

technique(s)

immunohistochemistry: suitable
western blot: suitable

NCBI accession no.

UniProt accession no.

shipped in

wet ice

Gene Information

human ... AQP4(361)

General description

Water is a critical component of all living cells. Interestingly, tissue membranes show a great degree of water permeability. Mammalian red cells, renal proximal tubules, and descending thin limb of Henle are extraordinarily permeable to water. Water crosses hydrophobic plasma membranes either by simple diffusion or through a facilitative transport mechanism mediated by special proteins "aquaporins". Aquaporins, are integral membrane proteins from a larger family of major intrinsic proteins (MIP) that form pores in the membrane of biological cells. Over the last decade, genes for several members of aquaporin family have been cloned, expressed, and their distribution studied in many tissues. The water-specific channel Aquaporin 4 is located in various tissues including the gastrointestinal tract, kidney and brain. It is an osmoreceptor which regulates body water balance and mediates water flow within the central nervous system. In CNS tissue, AQP4 localizes to astrocyte endfeet making it a useful structural marker.

Specificity

Recognizes Aquaporin 4 (AQP4, WCH4, Mercurial-Insensitive Water Channel).
Reactivity with other species has not yet been tested. It is expected that the antibody may also react with bovine (71/75) and rabbit (64/75) due to sequence homology.

Immunogen

Epitope: C-terminus
GST fusion protein with residues 249-323 of rat Aquaporin 4 (SwissProt accession number P47863).

Application

Research Sub Category
Ion & Transport Channels
Immunohistochemistry:
A previous lot of this antibody was used on rat brain sections.
Dilutions should be made using a carrier protein such as BSA (1-3%).

Western blotting:
1:500-1:1,000 using ECL on rat brain membranes.

Optimal working dilutions must be determined by the end user
Research Category
Neuroscience
Detect Aquaporin 4 using this Anti-Aquaporin 4 Antibody, C-terminus validated for use in IH & WB.

Quality

Routinely evaluated by Western Blot on Mouse Brain lysates.
Western Blot Analysis: 1:500 dilution of this lot detected AQUAPORIN 4 on 10 μg of Mouse Brain lysates.

Target description

38 kDa

Physical form

Purified rabbit polyclonal lyophilized from buffer containing PBS, pH 7.4, containing 1% BSA, and 0.05% sodium azide. Reconstitute with 200 µL of sterile distilled water. Centrifuge antibody preparation before use (10,000 x g for 5 min).
Format: Purified
ImmunoAffinity Purified

Storage and Stability

Stable for up to 6 months at -20ºC from date of receipt. After reconstitution stable at -20ºC in undiluted aliquots for up to 6 months. Avoid repeated freeze/thaw cycles.

Analysis Note

Control
Included free of charge with the antibody is 120 µg of control antigen (lyophilized powder). Reconstitute with 100 µL of PBS. For positive control, in Western blot use 20 ng of protein per Minigel lane. For negative control, preincubate 3 µg of purified peptide with 1 µg of antibody for one hour at room temperature. Optimal concentrations must be determined by the end user.

Other Notes

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

Legal Information

CHEMICON is a registered trademark of Merck KGaA, Darmstadt, Germany

Disclaimer

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Quality

Enter Lot Number to search for Certificate of Quality (COQ).

Loss of aquaporin 4 in lesions of neuromyelitis optica: distinction from multiple sclerosis.
Misu, T, et al.
Brain, 130, 1224-1234 (2007)
Benjamin A Plog et al.
JCI insight, 3(20) (2018-10-20)
Despite the initial promise of immunotherapy for CNS disease, multiple recent clinical trials have failed. This may be due in part to characteristically low penetration of antibodies to cerebrospinal fluid (CSF) and brain parenchyma, resulting in poor target engagement. We
Peng Yu et al.
Aging and disease, 10(4), 770-783 (2019-08-24)
Tissue plasminogen activator (tPA) is a serine protease primarily involved in mediating thrombus breakdown and regulating catabolism of amyloid-beta (Aβ). The aim of this study is to investigate age-dependent decline of endogenous tPA and the effects of tPA decline on
Lei Liu et al.
Antioxidants (Basel, Switzerland), 8(8) (2019-08-07)
Cerebral ischemia is a devastating disease with a high incidence of death and disability; however, effective therapeutics remain limited. The transcriptional factor Nrf2 has been shown to play a pivotal role in the endogenous defense against brain oxidative stress and
Gloria Vegliante et al.
Journal of clinical medicine, 8(8) (2019-08-02)
Traumatic brain injury (TBI) is a major cause of death and disability. Despite progress in neurosurgery and critical care, patients still lack a form of neuroprotective treatment that can counteract or attenuate injury progression. Inflammation after TBI is a key

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