Recombinant Human WD repeat domain phosphoinositide-interacting protein 2(WIPI2)

Code CSB-YP896519HU
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Source Yeast
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Code CSB-EP896519HU
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Source E.coli
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Code CSB-EP896519HU-B
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Source E.coli
Conjugate Avi-tag Biotinylated
E. coli biotin ligase (BirA) is highly specific in covalently attaching biotin to the 15 amino acid AviTag peptide. This recombinant protein was biotinylated in vivo by AviTag-BirA technology, which method is BriA catalyzes amide linkage between the biotin and the specific lysine of the AviTag.
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Code CSB-BP896519HU
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Source Baculovirus
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Code CSB-MP896519HU
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Source Mammalian cell
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Product Details

Purity >85% (SDS-PAGE)
Target Names WIPI2
Uniprot No. Q9Y4P8
Alternative Names ATG18B; Atg21; CGI 50; DKFZp434J154; DKFZp686P02188; FLJ12979; FLJ14217; FLJ42984; WD repeat domain phosphoinositide-interacting protein 2; WD repeat domain; phosphoinositide interacting 2; WD40 repeat protein interacting with phosphoinositides 2; WIPI 2; WIPI-2; WIPI2; WIPI2_HUMAN; WIPI49 like protein 2; WIPI49-like protein 2
Species Homo sapiens (Human)
Expression Region 1-454
Protein Length full length protein
Tag Info The following tags are available.
N-terminal His-tagged
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Form Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Buffer before Lyophilization Tris/PBS-based buffer, 6% Trehalose, pH 8.0
Reconstitution We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
and FAQs
Protein FAQs
Storage Condition Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Notes Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet Please contact us to get it.

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Target Background

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. Involved in an early step of the formation of preautophagosomal structures. 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. Mediates ER-isolation membranes contacts by interacting with the ULK1:RB1CC1 complex and PtdIns3P. Once activated, WIPI2 recruits at phagophore assembly sites the ATG12-ATG5-ATG16L1 complex that directly controls the elongation of the nascent autophagosomal membrane.; Recruits the ATG12-ATG5-ATG16L1 complex to omegasomes and preautophagosomal structures, resulting in ATG8 family proteins lipidation and starvation-induced autophagy. Isoform 4 is also required for autophagic clearance of pathogenic bacteria. Isoform 4 binds the membrane surrounding Salmonella and recruits the ATG12-5-16L1 complex, initiating LC3 conjugation, autophagosomal membrane formation, and engulfment of Salmonella.
Gene References into Functions
  1. Data suggest that, in patients with diabetic kidney disease, urinary excretion of mRNAs for MAP1LC3A, WIPI2, and RB1CC1 is down-regulated as compared to healthy control subjects; these transcripts may serve as urinary autophagy biomarkers. (MAP1LC3A = microtubule associated protein 1 light chain 3; WIPI2 = WD repeat domain phosphoinositide-interacting protein 2; RB1CC1 = RB1 inducible coiled-coil 1) PMID: 28760651
  2. Here the authors show that recruitment of WIPI2, itself essential for anti-bacterial autophagy, is dependent on the localization of catalytically active TBK1 to the vicinity of cytosolic bacteria. PMID: 27370208
  3. The specific autophagosomal localization of both WIPI1 and WIPI2 (refered to as WIPI puncta) has been employed to assess autophagy using fluorescence microscopy methods, such as confocal and live-cell video microscopy PMID: 25462558
  4. Data suggest WIPI1/WIPI2 co-localize with microtubule-associated light chain 3 and autophagy related proteins 2/14L, participate in biogenesis of phagosomes, autophagy, and mobilization of lipids to/from intracellular droplets. [review-like article] PMID: 25233424
  5. WIPI-1 and WIPI-2 are functionally required in mediating the PI3P signal at the onset of autophagy in NB4 cells. PMID: 24991767
  6. Data suggest that WIPI2b directly interacts with dimer of ATG16L1 (autophagy related 16-like 1) and this interaction is linked to production of phosphatidylinositol 3-phosphate in endoplasmic reticulum triggered by autophagosome formation. [REVIEW] PMID: 25233411
  7. WIPI2b binds the membrane surrounding Salmonella and recruits the Atg12-5-16L1 complex, initiating LC3 conjugation, autophagosomal membrane formation, and engulfment of Salmonella. PMID: 24954904
  8. A role for WIPI2 in the progression of omegasomes into autophagosomes, is reported. PMID: 20505359
  9. Freeze-fracture replica immunolabelling reveals WD-repeat protein interacting with phosphoinositides 1 and 2 (WIPI-1 and WIPI-2) as membrane components of autophagosomes and the plasma membrane (PM). PMID: 21564513
  10. WIPI2 is a phosphatidylinsitol-3-phosphate binding protein required for starvation induced autophagy. PMID: 20505359

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Subcellular Location Preautophagosomal structure membrane; Peripheral membrane protein; Cytoplasmic side.
Protein Families WD repeat SVP1 family
Tissue Specificity Ubiquitously expressed (at protein level). Highly expressed in heart, skeletal muscle and pancreas. Expression is down-regulated in pancreatic and in kidney tumors.
Database Links

HGNC: 32225

OMIM: 609225

KEGG: hsa:26100

STRING: 9606.ENSP00000288828

UniGene: Hs.122363

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