Product: AQP4 Mouse Monoclonal Antibody
Catalog: BF8290
Description: Mouse monoclonal antibody to AQP4
Application: WB IF/ICC
Reactivity: Human, Mouse, Rat
Prediction: Pig, Bovine, Horse, Rabbit, Dog, Chicken
Mol.Wt.: 34 kDa; 35kD(Calculated).
Uniprot: P55087

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 100ul $280 In stock
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Product Info

Source:
Mouse
Application:
IF/ICC 1:100-1:500, WB 1:500-1:3000
*The optimal dilutions should be determined by the end user.
*Tips:

WB: For western blot detection of denatured protein samples. IHC: For immunohistochemical detection of paraffin sections (IHC-p) or frozen sections (IHC-f) of tissue samples. IF/ICC: For immunofluorescence detection of cell samples. ELISA(peptide): For ELISA detection of antigenic peptide.

Reactivity:
Human,Mouse,Rat
Clonality:
Monoclonal [AFfirm8290]
Specificity:
AQP4 Mouse Monoclonal Antibody detects endogenous levels of total AQP4
Conjugate:
Unconjugated.
Purification:
Affinity-chromatography.
Storage:
Mouse IgG1 in phosphate buffered saline (without Mg2+ and Ca2+), pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol. Store at -20 °C. Stable for 12 months from date of receipt.
Alias:

Fold/Unfold

AQP 4; AQP-4; AQP4; AQP4_HUMAN; Aquaporin type 4; Aquaporin-4; Aquaporin4; HMIWC 2; HMIWC2; Mercurial insensitive water channel; Mercurial-insensitive water channel; MGC22454; MIWC; WCH 4; WCH4;

Immunogens

Immunogen:
Uniprot:
Gene(ID):
Expression:
P55087 AQP4_HUMAN:

Detected in skeletal muscle (PubMed:29055082). Detected in stomach, along the glandular base region of the fundic gland (at protein level) (PubMed:8601457). Detected in brain, lung and skeletal muscle, and at much lower levels in heart and ovary (PubMed:7559426, PubMed:8601457).

Description:
Forms a water-specific channel. Osmoreceptor which regulates body water balance and mediates water flow within the central nervous system.
Sequence:
MSDRPTARRWGKCGPLCTRENIMVAFKGVWTQAFWKAVTAEFLAMLIFVLLSLGSTINWGGTEKPLPVDMVLISLCFGLSIATMVQCFGHISGGHINPAVTVAMVCTRKISIAKSVFYIAAQCLGAIIGAGILYLVTPPSVVGGLGVTMVHGNLTAGHGLLVELIITFQLVFTIFASCDSKRTDVTGSIALAIGFSVAIGHLFAINYTGASMNPARSFGPAVIMGNWENHWIYWVGPIIGAVLAGGLYEYVFCPDVEFKRRFKEAFSKAAQQTKGSYMEVEDNRSQVETDDLILKPGVVHVIDVDRGEEKKGKDQSGEVLSSV

PTMs - P55087 As Substrate

Site PTM Type Enzyme
S111 Phosphorylation
S180 Phosphorylation P17252 (PRKCA)
S276 Phosphorylation P17612 (PRKACA)
Y277 Phosphorylation
S285 Phosphorylation
K295 Methylation
S316 Phosphorylation
S321 Phosphorylation
S322 Phosphorylation

Research Backgrounds

Function:

Forms a water-specific channel. Plays an important role in brain water homeostasis and in glymphatic solute transport. Required for a normal rate of water exchange across the blood brain interface. Required for normal levels of cerebrospinal fluid influx into the brain cortex and parenchyma along paravascular spaces that surround penetrating arteries, and for normal drainage of interstitial fluid along paravenous drainage pathways. Thereby, it is required for normal clearance of solutes from the brain interstitial fluid, including soluble beta-amyloid peptides derived from APP. Plays a redundant role in urinary water homeostasis and urinary concentrating ability (By similarity).

PTMs:

Phosphorylation by PKC at Ser-180 reduces conductance by 50%. Phosphorylation by PKG at Ser-111 in response to glutamate increases conductance by 40% (By similarity).

Isoform 2: Palmitoylated on its N-terminal region. Isoform 1: Not palmitoylated.

Subcellular Location:

Cell membrane>Multi-pass membrane protein. Basolateral cell membrane>Multi-pass membrane protein. Endosome membrane. Cell membrane>Sarcolemma>Multi-pass membrane protein. Cell projection.
Note: Activation of the vasopressin receptor AVPR1A triggers AQP4 phosphorylation at Ser-180 and promotes its internalization from the cell membrane. Detected on brain astrocyte processes and astrocyte endfeet close to capillaries.

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionSubcellular location
Tissue Specificity:

Detected in skeletal muscle. Detected in stomach, along the glandular base region of the fundic gland (at protein level). Detected in brain, lung and skeletal muscle, and at much lower levels in heart and ovary.

Subunit Structure:

Homotetramer. The tetramers can form oligomeric arrays in membranes. The size of the oligomers differs between tissues and is smaller in skeletal muscle than in brain. Interaction between AQP4 oligomeric arrays in close-by cells can contribute to cell-cell adhesion (By similarity). Part of a complex containing MLC1, TRPV4, HEPACAM and ATP1B1.

Family&Domains:

Aquaporins contain two tandem repeats each containing three membrane-spanning domains and a pore-forming loop with the signature motif Asn-Pro-Ala (NPA).

Belongs to the MIP/aquaporin (TC 1.A.8) family.

Research Fields

· Organismal Systems > Excretory system > Vasopressin-regulated water reabsorption.

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