Western blot
All lanes: VIPAS39 antibody at 12µg/ml
Lane 1: HepG2 whole cell lysate
Lane 2: A431 whole cell lysate
Lane 3: 293T whole cell lysate
Lane 4: Mouse kidney tissue
Lane 5: Hela whole cell lysate
Secondary
Goat polyclonal to rabbit IgG at 1/10000 dilution
Predicted band size: 58, 52 kDa
Observed band size: 58 kDa
Immunofluorescence staining of Hela cells with CSB-PA888005LA01HU at 1:200, counter-stained with DAPI. The cells were fixed in 4% formaldehyde, permeabilized using 0.2% Triton X-100 and blocked in 10% normal Goat Serum. The cells were then incubated with the antibody overnight at 4°C. The secondary antibody was Alexa Fluor 488-congugated AffiniPure Goat Anti-Rabbit IgG(H+L).
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貨期:
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用途:
For Research Use Only. Not for use in diagnostic or therapeutic procedures.
Proposed to be involved in endosomal maturation implicating in part VPS33B. In epithelial cells, the VPS33B:VIPAS39 complex may play a role in the apical RAB11A-dependent recycling pathway and in the maintenance of the apical-basolateral polarity. May play a role in lysosomal trafficking, probably via association with the core HOPS complex in a discrete population of endosomes; the functions seems to be independent of VPS33B. May play a role in vesicular trafficking during spermatogenesis. May be involved in direct or indirect transcriptional regulation of E-cadherin.
基因功能參考文獻:
A likely causal mutation was identified in the majority (61%), spanning many genes including ones that have only rarely been reported to cause cholestatic liver disease, e.g. TJP2 and VIPAS39 PMID: 28039895
Genetic studies showed a homozygous mutation in the VIPAS39 gene. Making the definite diagnosis of the syndrome is important, while increased risk of mutation in other siblings highlights the importance of prenatal diagnosis. PMID: 26808426
Our data suggest that the ARC syndrome may result through impaired VIPAS39/SPE-39 and Vps33b-dependent endosomal maturation or fusion. PMID: 23918659
VPS16B, similar to its binding partner VPS33B, is essential for megakaryocyte and platelet alpha-granule biogenesis. PMID: 23002115
SPE-39 has an inhibitory effect due to tyrosine phosphorylation and ubiquitination on the function of Vps33B in the EGF-stimulated cells PMID: 22677173
SPE-39 homologues are present in RAB5-, RAB7-, and RAB11-positive endosomes where they play a conserved role in lysosomal delivery and probably function via their interaction with the core HOPS complex. PMID: 19109425
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相關疾病:
Arthrogryposis, renal dysfunction and cholestasis syndrome 2 (ARCS2)
亞細胞定位:
Cytoplasm. Cytoplasmic vesicle. Early endosome. Recycling endosome. Late endosome. Note=Colocalizes in clusters with VPS33B at cytoplasmic organelles (PubMed:19109425).