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
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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.
Regulation of processes involving cell contact and adhesion such as growth control, tumor invasion, and metastasis. Negative regulator of EGFR signaling pathway. Forms complexes with beta-catenin and gamma-catenin/plakoglobin. Beta-catenin may be a substrate for the catalytic activity of PTPRK/PTP-kappa.
基因功能參考文獻:
PTPRK was identified as a direct target of miR-1260b, and PTPRK expression was inversely correlated with miR-1260b in non-small cell lung cancer cell lines and clinical tissues PMID: 29628123
Study found a significant association between PTPRK genetic variants and the risk and age at onset of Alzheimer's disease in two independent samples, and provided initial evidence of several genetic variants in PTPRK influencing the risk of cancer and cholesterol levels. PMID: 28987514
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
PTPRK plays dual roles in coordinating angiogenesis. It plays a positive role in cell proliferation, adhesion and tubule formation, but suppresses cell migration, in particular, the FGF-promoted migration. PMID: 28259897
PTPRK-RSPO3 fusions and RNF43 mutations were found to be characteristic genetic features of traditional serrated adenomas (TSAs). PMID: 26924569
By regulating phosphorylation of SRC, RPTPkappa promotes the pathogenic action of rheumatoid arthritis fibroblast-like synoviocytes, mediating cross-activation of growth factor and inflammatory cytokine signalling by TGFbeta in RA FLS. PMID: 25378349
Notch and TGF-beta act in concert to stimulate induction of PTPRK, which suppresses EGFR activation in human keratinocytes. PMID: 25609089
Findings strongly indicate that the tyrosine phosphorylation of CD133, which is dephosphorylated by PTPRK, regulates AKT signaling and has a critical role in colon cancer progression. PMID: 24882578
PTPRK underexpression leads to STAT3 activation and contributes to nasal NK/T-cell lymphoma pathogenesis PMID: 25612622
PTPRK showed lower mRNA expression in duodenal mucose of celiac disease patients. PMID: 23820479
High expression of PTPRK is associated with prostate cancer. PMID: 24002526
Tumor derived mutations of protein tyrosine phosphatase receptor type k affect its function and alter sensitivity to chemotherapeutics in glioma. PMID: 23696788
PTPRK is a negative regulator of adhesion, invasion, migration, and proliferation of breast cancer cells. PMID: 23552869
PTPkappa was scissored by the processed form of proprotein convertase 5, and galectin-3 binding protein which is over-produced in colon cancer cells and tissues. PMID: 21094132
These data describe a novel mechanism of cross-talk between EGFR and TGF-beta pathways, in which RPTP-kappa functions to integrate growth-promoting and growth-inhibiting signaling pathways. PMID: 19864455
Our results suggest that GnT-V could decrease human hepatoma SMMC-7721 cell adhesion and promote cell proliferation partially through RPTPkappa. PMID: 19911372
RPTP-kappa is a key regulator of EGFR tyrosine phosphorylation and function in human keratinocytes PMID: 16263724
the crystal structure of catalytically active, monomeric D1 domain of RPTPkappa at 1.9 A. RPTPkappa is monomeric in solution and crystal structure. PMID: 16672235
EGF receptor is activated in human keratinocytes by oxidative inhibition of receptor-type protein-tyrosine phosphatase kappa by ultraviolet irradiation PMID: 16849327
EBNA1 apparently disables TGF-beta signaling, which subsequently decreases transcription of the PTPRK tumor suppressor PMID: 17720884
PTPRK influences transactivating activity of beta-catenin in non-tumoral and neoplastic cells by regulating the balance between signaling and adhesive beta-catenin, thus providing biochemical basis for the hypothesis of PTPRK as a tumor suppressor gene. PMID: 18276111
overexpression of GnT-V in a hepatoma cell line not only induced the addition of beta1,6 GlcNAc branch to N-glycan of RPTPkappa but also decreased the protein level of RPTPkappa PMID: 19236842
These data indicate that PPTRK positively regulates ERK1/2 phosphorylation, which impacts CD4(+) T cell development. PMID: 19800317
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亞細胞定位:
Cell junction, adherens junction. Cell membrane; Single-pass type I membrane protein.
蛋白家族:
Protein-tyrosine phosphatase family, Receptor class 2B subfamily
組織特異性:
High levels in lung, brain and colon; less in liver, pancreas, stomach, kidney, placenta and mammary carcinoma.