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CD55 Rabbit anti-Human, Polyclonal, Invitrogen™

Rabbit Polyclonal Antibody

Manufacturer:  Invitrogen PA521532

Catalog No. PIPA521532

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PA5-21532 targets CD55 in ICC, IF, and WB applications and shows reactivity with Human samples. The PA5-21532 immunogen is recombit protein fragment contain a sequence corresponding to a region within amino acids 71 and 330 (P08174) of CD55. Store product as a concentrated solution. Centrifuge briefly prior to opening the vial. For short-term storage (1-2 weeks), product can be stored at 4°C. For long-term storage, aliquot and store product at -20° C or below, avioiding multiple freeze-thaw cycles.

CD55 (decay-accelerating factor, DAF) is a GPI-anchored membrane glycoprotein that protects autologous cells from classical and alternative pathway of complement cascade. Bidirectional interactions between CD55 and CD97 are involved in T cell regulation and CD55 can regulate complement when bound to CD97. In tumors, CD55 promotes neoangiogenesis, tumorigenesis, invasiveness and evasion of apoptosis. CD55 is a 70 kDa glycoprotein (in erythrocytes) anchored in the membrane by glycosylphosphatidylinositol tail. In other cells, the apparent molecular weight is somewhat larger for CD55 and has a substantial content of O-glycans. CD55 binds to activated C4b or C3b complement fragments on the cell surface, preventing the assembly and accelerating the decay of both classical and alternative pathways. CD55 carries the Cromer related blood group antigens. Two alternatively spliced transcripts encoding CD55 have been identified, and the predomit transcript encodes a membrane-bound protein expressed on cells exposed to plasma component proteins but an alternatively spliced transcript produces a soluble protein present at much lower levels. CD55 has been studied to have a role in prostate cancer growth and survival.


Recombit protein fragment contain a sequence corresponding to a region within amino acids 71 and 330 (P08174) of CD55
Antigen affinity chromatography
Immunocytochemistry, Immunofluorescence, Western Blot
1 mg/mL
0.1M tris glycine with 10% glycerol and 0.01% thimerosal; pH 7
RP11-357P18.1, CR, CROM, DAF, TC
100 μL
Store at 4°C short term. For long term storage, store at -20°C, avoiding freeze/thaw cycles.
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