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.
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.
產品提供形式:
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.
復溶:
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.
儲存條件:
Store at -20°C/-80°C upon receipt, aliquoting is
necessary for
mutiple use. Avoid repeated freeze-thaw cycles.
保質期:
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.
貨期:
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.
注意事項:
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Activator of the canonical Wnt signaling pathway by acting as a ligand for LGR4-6 receptors, which acts as a key regulator of angiogenesis. Upon binding to LGR4-6 (LGR4, LGR5 or LGR6), LGR4-6 associate with phosphorylated LRP6 and frizzled receptors that are activated by extracellular Wnt receptors, triggering the canonical Wnt signaling pathway to increase expression of target genes. Also regulates the canonical Wnt/beta-catenin-dependent pathway and non-canonical Wnt signaling by acting as an inhibitor of ZNRF3, an important regulator of the Wnt signaling pathway. Acts as a ligand for frizzled FZD8 and LRP6. May negatively regulate the TGF-beta pathway. Acts as a key regulator of angiogenesis by controlling vascular stability and pruning: acts by activating the non-canonical Wnt signaling pathway in endothelial cells. Can also amplify Wnt signaling pathway independently of LGR4-6 receptors, possibly by acting as a direct antagonistic ligand to RNF43 and ZNRF3.
基因功能參考文獻:
Knockdown of RSPO3 resulted in significantly increased mRNA expression levels of RUNX2, ALP and OCN and no effects on the proliferation of human adipose-derived stem cells. PMID: 28220828
For liver transplant-free survival, a genome-wide significant signal was identified and expression of the candidate gene RSPO3 was demonstrated in key liver-resident effector cells and may play a role in primary sclerosing cholangitis disease progression. PMID: 28779025
The present study identified RSPO fusion transcripts, including three novel transcripts, in one-third of colorectal Traditional serrated adenoma (TSA) and showed that PTPRK-RSPO3 fusions were the predominant cause of RSPO overexpression in colorectal TSA. PMID: 28543708
RSPOs facilitate HSC activation and promote liver fibrogenesis by enhancing the Wnt pathway PMID: 27572318
Colorectal cancer cell lines identified VACO6 cells as a carrier of a canonical PTPRK(e1)-RSPO3(e2) fusion; cell line displayed marked in vitro and in vivo sensitivity to WNT blockade by the porcupine inhibitor LGK974. Long-term treatment of VACO6 cells with LGK974 led to the emergence of a resistant population carrying two frameshift deletions of the WNT pathway inhibitor AXIN1, with consequent protein loss. PMID: 28100566
Using C-mannosylation-defective Rspo3 mutant-overexpressing cell lines, we found that C-mannosylation of Rspo3 promotes its secretion and activates Wnt/beta-catenin signaling. PMID: 27350215
High RSPO3 expression is associated with breast cancer. PMID: 26735887
A genome-wide association study of bone mineral density (BMD) found a new BMD locus that harbors the PTCH1 gene, that associates with reduced spine BMD and the RSPO3 associates with increased spine BMD. PMID: 26733130
results suggest that the expression of RSPO fusion transcripts is related to a subset of colorectal cancers arising in the Japanese population PMID: 24847761
using RNA-seq data, identification of multiple fusion transcripts including recurrent gene fusions involving R-spondin family members RSPO2 and RSPO3 that together occur in 10% of colon tumours PMID: 22895193
the gene is a novel member of thrombospondin type I repeat supergene family (hPWTSR) PMID: 12463421
a polymorphism in thrombospondin subtly but significantly sensitizes the calcium-binding repeats to removal of Ca2+ and thermal denaturation PMID: 12643280
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亞細胞定位:
Secreted.
蛋白家族:
R-spondin family
組織特異性:
Ubiquitously expressed. Expressed at higher level in placenta, small intestine, fetal thymus and lymph node. Highly expressed in endothelial cells.