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.
Low-affinity receptor for immunoglobulin E (IgE) and CR2/CD21. Has essential roles in the regulation of IgE production and in the differentiation of B-cells (it is a B-cell-specific antigen).
基因功能參考文獻:
Human and murine P2X7 activation induces the rapid shedding of CD23 from B cells, with a potential role for ADAM10 in this process. PMID: 25155463
CD23 was shown to be sorted in an ADAM10-dependent manner into exosomes. PMID: 20876574
B cells captured IgE by direct binding to the low-affinity IgE receptor, CD23. PMID: 20870945
After exposure for 10 consecutive days to nebulized ovalbumin challenge, mice with disrupted Fc epsilon RI alpha subunit show low response to electrical field stimulation, less airway inflammation and goblet cell hyperplasia, and lower IL-13 in the lung. PMID: 15128831
the functions of CD23 splice forms, b and bDelta5, in the apical to basolateral transcytosis of IgE/allergen complexes were investigated PMID: 15702991
A positive internalization signal for IgE transepithelial transport is localized in the cytoplasmic region shared by all CD23 splice forms. This positive signal is negatively regulated by the intracellular CD23b-specific exon. PMID: 15843555
mechanism by which endogenous B cell activity in vivo is regulated by norepinephrine involves stimulation of the beta2-adrenergic receptor on the B cell alone to increase the level of IgE produced in a p38 MAPK- and soluble CD23-dependent manner PMID: 16920928
Overall, the data provide a direct demonstration for CD23's role in regulating IgE production in vivo and suggest that therapies aimed at stabilizing cell surface CD23 would be beneficial in controlling allergic disease. PMID: 17324389
CD23 is an important regulatory factor for IgE production PMID: 18828998
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亞細胞定位:
Cell membrane; Single-pass type II membrane protein. Cell membrane; Lipid-anchor.