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(chǎn)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(fù)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(chǔ)存條件:
Store at -20°C/-80°C upon receipt, aliquoting is
necessary for
mutiple use. Avoid repeated freeze-thaw cycles.
保質(zhì)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(xiàng):
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Contributes to the lung's defense against inhaled microorganisms, organic antigens and toxins. Interacts with compounds such as bacterial lipopolysaccharides, oligosaccharides and fatty acids and modulates leukocyte action in immune response. May participate in the extracellular reorganization or turnover of pulmonary surfactant. Binds strongly maltose residues and to a lesser extent other alpha-glucosyl moieties.
基因功能參考文獻(xiàn):
in acute lung injury, serum level increased from day 5, peaked on day 10, and then gradually decreased until day 28 PMID: 27541374
SPA binds dipalmitoyl-phosphatidylcholine, the major surfactant lipid component, but not phosphatidylinositol; SPD exhibits the opposite preference. Data suggest flexibility in a key surface loop supports distinctive lipid binding of SPA; quadruple mutant SPA (E171D/P175E/R197N/K203D) that introduces SPD-like loop-stabilizing Ca2+ binding site in carbohydrate recognition domain exhibits ligand-binding preferences of SPD. PMID: 28719181
In rat SP-D overexpressed mice, the lipopolysaccharide-induced levels of TNF-alpha and IL-10 in amniotic fluid and fetal serum and the expression of IL-10 in placenta and fetal membranes were significantly different from wild-type mice. PMID: 22892325
Surfactant protein D modulated subpollen particle uptake in a cell type specific way (e.g. greater number of macrophages and epithelial cells, which participated in allergen particle uptake) and led to a decreased secretion of pro-inflammatory cytokines. PMID: 22296755
Silica exposure causes dynamic changes of SP-D and CC16 protein expression in lung tissue and bronchoalveolar lavage fluid. PMID: 19080379
An extended binding site for influenza A virus; calcium-dependent antiviral activity involves residues flanking the primary carbohydrate binding site as well as more remote residues displayed on the carbohydrate recognition domain surface. PMID: 20601494
SP-D promotes attachment of allergen-containing subpollen particles to epithelial cells and may thus be involved in the inflammatory response to inhaled allergen. PMID: 20569420
analysis of myeloperoxidase-dependent inactivation of surfactant protein D in vitro and in vivo PMID: 20228064
Results suggest that SP-D-dependent processes regulating surfactant lipid homeostasis were disassociated from those mediating emphysema. PMID: 12163500
Heterogeneous allele expression of SP-D mRNA in large intestine and other tissues. PMID: 12464693
SP-A and SP-D are antimicrobial proteins that directly inhibit the proliferation of Gram-negative bacteria in a macrophage- and aggregation-independent manner by increasing the permeability of the microbial cell membrane PMID: 12750409
SP-A and SP-D are antimicrobial proteins that directly inhibit the growth of Histoplasma capsulatum by increasing permeability of the organism PMID: 12857753
SP-D interacts with chlamydial pathogens and enhance their phagocytosis into macrophages PMID: 15075250
Degradation of pulmonary surfactant protein D by Pseudomonas aeruginosa elastase abrogates innate immune function PMID: 15123664
SP-A and SP-D enhance mannose receptor-mediated phagocytosis of M. avium by macrophages PMID: 15187139
results indicated SP-A & SP-D have distinct functions in lung homeostasis & the function of the neck domain & carbohydrate recognition domain of SP-D is dependent on its own NH2-terminal & collagenous domains that cannot be complemented by those of SP-A PMID: 16500946
The ligand binding of homologous human, rat, and mouse trimeric trimeric neck plus carbohydrate recognition domain (neck+CRD) fusion proteins, each with identical N-terminal tags remote from the ligand-binding surface, was compared. PMID: 16514117
VEGF increased expression of SP-D mRNA in preterm rat lung. PMID: 17267143
Interactions with the side chain of inner core heptoses provide a potential mechanism for the recognition of diverse types of lipopolysaccharides by SP-D. PMID: 18092821
These results show that antiviral activities of surfactant protein-D can be reproduced without the N-terminal and collagen domains and that cross-linking of these domains is essential for anti-influenza A virus activity. PMID: 18302538
After OVA challenge alveolar epithelial cells Type II (AEII) show a significantly higher expression of SP-A and SP-D leading also to higher amounts of both SPs in BALF, and macrophages gather predominantly SP-A. PMID: 18802356
S-nitrosylation of SP-D causes quaternary structural alterations and a swtich to its inflammatory signaling role. PMID: 19007302
Multimerization of surfactant protein D, but not its collagen domain, is required for antiviral and opsonic activities related to influenza virus. PMID: 19017984
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亞細(xì)胞定位:
Secreted, extracellular space, extracellular matrix. Secreted, extracellular space, surface film.