Aqp4 Rabbit Polyclonal Antibody

Specifications

Product Data
Applications	IF, IHC, WB
Recommend Dilution	WB: 1:200-1:2000; IHC: 1:100-1:3000
Reactivity	Mouse, Rat
Host	Rabbit
Clonality	Polyclonal
Immunogen	Peptide (C)HVIDIDRGDEKKGKD, corresponding to amino acid residues 300-314 of rat AQP4 (Accession P47863). Intracellular, C-terminus.
Formulation	Lyophilized. Concentration before lyophilization ~0.8mg/ml (lot dependent, please refer to CoA along with shipment for actual concentration). Buffer before lyophilization: Phosphate buffered saline (PBS), pH 7.4, 1% BSA, 0.05% NaN3.
Reconstitution Method	Add 50 ul double distilled water (DDW) to the lyophilized powder.
Purification	Affinity purified on immobilized antigen.
Conjugation	Unconjugated
Storage Condition	Store at -20°C as received.
Gene Name	aquaporin 4
Database Link	NP_036957 Entrez Gene 11829 MouseEntrez Gene 25293 Rat UniProt ID P47863
Background	Aquaporin 4 (AQP-4) belongs to a family of membrane proteins that allow passage of water and certain solutes through biological membranes. The family is composed of 13 members (AQP-0 to AQP-12). The aquaporins can be divided into two functional groups based on their permability characteristics: the aquaporins that are only permeated by water and the aquaglyceroporins that are permeated by water and other small solutes such as glycerol. AQP-4 together with AQP-1, AQP-2 and AQP-5 belong to the first group. Little is known about the function of the two newest members, AQP-11 and AQP-12. The proteins present a conserved structure of six transmembrane domains with intracellular N- and C-termini. The functional channel is a tetramer but each subunit has a separate pore and therefore the functional channel unit, contains four pores. AQP-4 is the major membrane water channel in the central nervous system. The channel is expressed in astrocyte foot processes in direct contact with capillary vessels in the brain suggesting a role in water transport under normal and pathological conditions. Indeed, transgenic mice lacking AQP-4 have reduced brain swelling and improved neurological outcome following water intoxication and focal cerebral ischemia. In contrast, brain swelling and clinical outcome are worse in AQP-4- mice in models of vasogenic (fluid leak) edema caused by freeze-injury and brain tumor, probably due to impaired AQP-4-dependent brain water clearance. In addition, it has been recently shown that neuromyelitis optica (NMO), an inflammatory demyelinating disease that selectively affects optic nerves and spinal cord, is caused by the development of an autoantibody directed against AQP-4.
Synonyms	AQP-4; aquaporin-4; HMIWC2; MGC22454; MIWC; WCH4
Reference Data

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