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WIPI2 Antibody

     
  • WB - WIPI2 Antibody ASC11577
    Western blot analysis of WIPI2 in human testis tissue lysate with WIPI2 antibody at 1 µg/mL
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Product Information
Application
  • Applications Legend:
  • WB=Western Blot
  • IHC=Immunohistochemistry
  • IHC-P=Immunohistochemistry (Paraffin-embedded Sections)
  • IHC-F=Immunohistochemistry (Frozen Sections)
  • IF=Immunofluorescence
  • FC=Flow Cytopmetry
  • IC=Immunochemistry
  • ICC=Immunocytochemistry
  • E=ELISA
  • IP=Immunoprecipitation
  • DB=Dot Blot
  • CHIP=Chromatin Immunoprecipitation
  • FA=Fluorescence Assay
  • IEM=Immunoelectronmicroscopy
  • EIA=Enzyme Immunoassay
WB, E
Primary Accession Q9Y4P8
Other Accession NP_056425, 7661580
Reactivity Human, Rat
Host Rabbit
Clonality Polyclonal
Isotype IgG
Calculated MW 50 kDa
Application Notes WIPI2 antibody can be used for detection of WIPI2 by Western blot at 1 - 2 µg/mL.
Additional Information
Gene ID 26100
Target/Specificity WIPI2; WIPI2 antibody is human and rat reactive. Multiple isoforms of WIPI2 are known to exist. WIPI2 antibody is predicted to not cross-react with WIPI1.
Reconstitution & Storage WIPI2 antibody can be stored at 4℃ for three months and -20℃, stable for up to one year. As with all antibodies care should be taken to avoid repeated freeze thaw cycles. Antibodies should not be exposed to prolonged high temperatures.
PrecautionsWIPI2 Antibody is for research use only and not for use in diagnostic or therapeutic procedures.
Protein Information
Name WIPI2 (HGNC:32225)
Function Component of the autophagy machinery that controls the major intracellular degradation process by which cytoplasmic materials are packaged into autophagosomes and delivered to lysosomes for degradation (PubMed:20505359, PubMed:28561066). Involved in an early step of the formation of preautophagosomal structures (PubMed:20505359, PubMed:28561066). Binds and is activated by phosphatidylinositol 3- phosphate (PtdIns3P) forming on membranes of the endoplasmic reticulum upon activation of the upstream ULK1 and PI3 kinases (PubMed:28561066). Mediates ER-isolation membranes contacts by interacting with the ULK1:RB1CC1 complex and PtdIns3P (PubMed:28890335). Once activated, WIPI2 recruits at phagophore assembly sites the ATG12-ATG5-ATG16L1 complex that directly controls the elongation of the nascent autophagosomal membrane (PubMed:20505359, PubMed:28561066).
Cellular Location Preautophagosomal structure membrane; Peripheral membrane protein; Cytoplasmic side. Note=Localizes to omegasomes membranes which are endoplasmic reticulum connected structures at the origin of preautophagosomal structures. Enriched at preautophagosomal structure membranes in response to PtdIns3P.
Tissue Location Ubiquitously expressed (at protein level). Highly expressed in heart, skeletal muscle and pancreas. Expression is down- regulated in pancreatic and in kidney tumors
Research Areas
Citations (0)
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Background

WIPI2 Antibody: WD repeat proteins play a role in many essential biologic functions, regulating the assembly of multiprotein complexes by presenting a beta-propeller platform for simultaneous and reversible protein-protein interactions. WIPI2, also known as ATG18B or ATG21, is a human homolog to yeast ATG18 and contains three WD repeats and has a 7-bladed propeller structure with a conserved motif that facilitates its interaction with other proteins. It is recruited to early autophagosomal structures along with Atg16L and ULK1 and is required for the formation of LC3-positive autophagosomes. Along with the highly related WIPI1, WIPI2 is found at the plasma membrane in addition to autophagosomal membranes.

References

Smith TF. Diversity of WD-repeat proteins. Subcell. Biochem. 2008; 48:20-30.
Polson HE, de Lartique J, Rigden DJ, et al. Mammalian ATG18 (WIPI2) localizes to moegasome-anchored phagophores and positively regulates LC3 lipidation. Autophagy 2010; 6:506-22.
Proikas-Cezanne T and Robenek H. Freeze-fracture replica immunolabelling reveals human WIPI-1 and WIPI-2 as membrane proteins of autophagosomes. J. Cell. Mol. Med. 2011; 15:2007-10.

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$ 379.00
Cat# ASC11577
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