Recombinant Human CD55 / DAF Protein (Fc tag)
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Catalog number
PKSH031879-50µg
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Price
Please ask
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Size
50µg
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Synonym
CR;CROM;DAF;TC
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Activity
Measured by its binding ability in a functional ELISA. Immobilized recombinant human CD97 at 10 μg/ml (100 μl/well) can bind recombinant human CD55 at a linear range of 0.46-30 μg/ml.
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Sequence
Met 1-Ser 353
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Fusion tag
C-Fc
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Accession
NP_000565.1
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Expressed Host
HEK293 Cells
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Shipping
In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
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Purity
＞90 % as determined by SDS-PAGE
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Endotoxin
＜1.0 EU per µg as determined by the LAL method
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Stability and Storage
Samples are stable for up to twelve months from date of receipt at -70℃.Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
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Mol Mass
61.7 kDa
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AP Mol Mass
95-105 kDa
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Formulation
Lyophilized from sterile PBS, pH 7.4
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Background
CD55, also well known as decay-accelerating factor (DAF), is a member of the RCA (regulators of complement activation) family characterized by four to 30 SCRs (short consensus repeats) in their plasma-exposed regions. It is a major regulator of the alternative and classical pathways of complement activation and is expressed on all serum-exposed cells. CD55 is physiologically acting as an inhibitor of the complement system, but is also broadly expressed in malignant tumours. DAF seems to exert different functions beyond its immunological role such as promotion of tumorigenesis, decrease of complement mediated tumor cell lysis, autocrine loops for cell rescue and evasion of apoptosis, neoangiogenesis, invasiveness, cell motility. It is commonly hijacked by invading pathogens, including many enteroviruses and uropathogenic Escherichia coli, to promote cellular attachment prior to infection. This 70-75 kDa glycoprotein CD55 containing four SCR modules is involved in the regulation of the complement cascade. It inhibits complement activation by suppressing the function of C3/C5 convertases, thereby limiting local generation or deposition of C3a/C5a and membrane attack complex (MAC or C5b-9) production. DAF has been identified as a ligand for an activation-associated, seven-transmembrane lymphocyte receptor, CD97, which is a receptor mediating attachment and infection of several viruses and bacteria. In addition, it has been shown that DAF regulates the interplay between complement and T cell immunity in vivo, and thus may be implicated in immune and tumor biology.
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Properties
Human proteins, cDNA and human recombinants are used in human reactive ELISA kits and to produce anti-human mono and polyclonal antibodies. Modern humans (Homo sapiens, primarily ssp. Homo sapiens sapiens). Depending on the epitopes used human ELISA kits can be cross reactive to many other species. Mainly analyzed are human serum, plasma, urine, saliva, human cell culture supernatants and biological samples.
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Source
Recombinants or rec. proteins
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Group
recombinants
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Gene target
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Gene symbol
CD55
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Short name
Recombinant CD55 / DAF Protein (Fc tag)
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Technique
Recombinant, FC, E. coli recombinant proteins are genetic recombinations in Escherichia coli, supplied as white sterile powder lyopillized. Elabscience advises they will be reconstituted in a buffer soluion or culture medium for cell culture. Tags
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Label
Fc Tag
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Species
Human, Humans
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Alternative name
Rec. H. sapiens CD55 molecule, decay accelerating factor to measure complement (Cromer blood group) / DAF Protein (fragment c detection labelled)
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Alternative technique
rec
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Alternative to gene target
CD55 molecule, decay accelerating factor for complement (Cromer blood group), CR and CROM and DAF and TC, CD55 and IDBG-106331 and ENSG00000196352 and 1604, lipid binding, Extracellular, CD55 and IDBG-629269 and ENSBTAG00000006984 and 518609
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Gene info
MeSH Data
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Name
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Concept
Scope note:
The initial culturing of cells derived directly from fresh TISSUES.
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Tree numbers
- E01.370.225.500.223.500
- E05.200.500.265.500
- E05.242.223.500
- E05.481.500.249.500
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Qualifiers
ethics, trends, veterinary, history, classification, economics, instrumentation, methods, standards, statistics & numerical data
Product images
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