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.
Datasheet :
Please contact us to get it.
產品評價
靶點詳情
功能:
Glutamine synthetase that catalyzes the ATP-dependent conversion of glutamate and ammonia to glutamine. Its role depends on tissue localization: in the brain, it regulates the levels of toxic ammonia and converts neurotoxic glutamate to harmless glutamine, whereas in the liver, it is one of the enzymes responsible for the removal of ammonia. Essential for proliferation of fetal skin fibroblasts. Independently of its glutamine synthetase activity, required for endothelial cell migration during vascular development. Involved in angiogenesis by regulating membrane localization and activation of the GTPase RHOJ, possibly by promoting RHOJ palmitoylation. May act as a palmitoyltransferase for RHOJ: able to autopalmitoylate and then transfer the palmitoyl group to RHOJ. Plays a role in ribosomal 40S subunit biogenesis.
基因功能參考文獻:
genetic deletion of Glul in endothelial cells impairs vessel sprouting during vascular development, whereas pharmacological blockade of glutamine synthetase suppresses angiogenesis in ocular and inflammatory skin disease while only minimally affecting healthy adult quiescent endothelial cells PMID: 30158707
The data identify GS activity as mediator of the proangiogenic, immunosuppressive, and pro-metastatic function of M2-like macrophages and highlight the possibility of targeting this enzyme in the treatment of cancer metastasis. PMID: 28813676
Our study highlights a new role of GS in modulating immune response in microglia, providing insights into the pathogenic mechanisms associated with inflammation and new strategies of therapeutic intervention PMID: 27758118
We conclude that 1) GS-mediated ammonia recycling in the PT contributes to both basal and acidosis-stimulated ammonia metabolism and 2) adaptive changes in other proteins involved in ammonia metabolism occur in response to PT-GS-KO and cause an underestimation of the role of PT GS expression. PMID: 27009341
Diabetes induces TXNIP expressions at mRNA levels, but shows the opposite effect on GS. PMID: 27131835
Results indicate that astrocyte glutamine synthase may be the predominant contributor to the pathogenic mechanisms of D-gal-induced brain aging in mice. PMID: 25128847
Hepatic deletion of GS triggered systemic hyperammonemia, which was associated with cerebral oxidative stress as indicated by increased levels of oxidized RNA and enhanced protein Tyr nitration. PMID: 25870278
modulation of intracellular glutamine levels by GS expression represents an endogenous mechanism through which mature adipocytes control the inflammatory response PMID: 25451225
GABABR2 has a role as a regulator of glutamine synthetase stability PMID: 25172509
the capacity for ammonia disposal correlated inversely with the expression of glutamine synthetase in muscle PMID: 25074987
Glutamine synthetase in astrocytes from entorhinal cortex of the triple transgenic animal model of Alzheimer's disease is not affected by pathological disease progression. PMID: 23990215
In a transgenic mouse model of Alzheimer disease, found decrease in number of GS-positive astrocytes in prefrontal cortex from early to middle ages when compared with control animals. PMID: 24059854
Renal glutamine synthetase is expressed in type A intercalated cells, non-A, non-B intercalated cells, and distal convoluted tubule cells, but not in principal cells, type B intercalated cells, or connecting segment cells. PMID: 23804452
Methionine sulfoximine target glutamine synthetase is required for the early steps of the cytokine response to endotoxins, and that its pharmacological inhibition may be exploited to treat inflammation. PMID: 21745296
BDNF can up-regulate GLAST and GS and increase glutamate uptake during hypoxia, and these functions may underlie its neuroprotective effects. PMID: 21448920
Glutamine synthetase deficiency in murine astrocytes results in neonatal death. PMID: 20140959
Glutamine synthetase in muscle is required for glutamine production during fasting and extrahepatic ammonia detoxification PMID: 20064933
Reduction of GS in TGF-beta1-on-mice results from apoptosis of GS-positive hepatocytes rather than downregulation of GS expression PMID: 15246211
aspartate aminotransferase and glutamine synthetase have roles in glucocorticoid activation in mouse Schwann cells PMID: 16182522
There was a >100-fold difference in GS mRNA, protein, and enzyme-activity levels among organs, whereas there was only a 20-fold difference in the GS protein:mRNA ratio, suggesting extensive transcriptional and posttranscriptional regulation. PMID: 16609703
oestradiol induced expression of GS suggests a significant role for glial cells in hormonal modulation of glutamatergic neurotransmission important to female reproductive behaviours, neuroendocrine physiology and cognitive functions PMID: 16879168
In myocytes and hepatomas, but not in adipocytes, glutamine acts to moderate glutamine synthetase induction by glucocorticoids. PMID: 17197094
In H4Flox liver, glutamine synthetase (GS), ornithine aminotransferase (OAT) and thyroid hormone-receptor beta1 (TRbeta1) were exclusively expressed in pericentral hepatocytes. PMID: 17256722
Our results indicate that individuals with reduced glutamine synthetase activity may have reduced FS seizure thresholds. Genetic association studies will be required to test this hypothesis. PMID: 19170755