CD55 Polyclonal antibody

CD55 Polyclonal Antibody for IF, IHC, WB,ELISA

Host / Isotype

Rabbit / IgG


human, mouse and More (1)





Cat no : 26580-1-AP



Tested Applications

Positive WB detected inA549 cells, human placenta tissue
Positive IHC detected inhuman tonsillitis tissue, human placenta tissue
Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0
Positive IF detected inA549 cells

Recommended dilution

Western Blot (WB)WB : 1:1000-1:8000
Immunohistochemistry (IHC)IHC : 1:50-1:500
Immunofluorescence (IF)IF : 1:50-1:500
Sample-dependent, check data in validation data gallery

Published Applications

WBSee 3 publications below

Product Information

The immunogen of 26580-1-AP is CD55 Fusion Protein expressed in E. coli.

Tested Reactivity human, mouse
Cited Reactivitymouse, rat
Host / Isotype Rabbit / IgG
Class Polyclonal
Type Antibody
Immunogen CD55 fusion protein Ag25026
Full Name CD55 molecule, decay accelerating factor for complement (Cromer blood group)
Calculated molecular weight 41 kDa
Observed molecular weight 60-70 kDa
GenBank accession numberBC001288
Gene symbol CD55
Gene ID (NCBI) 1604
Conjugate Unconjugated
Form Liquid
Purification Method Antigen affinity purification
Storage Buffer PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
Storage ConditionsStore at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage.

Background Information

CD55, also known as DAF, is a glycosylphosphatidylinositol (GPI)-anchored surface glycoprotein that is widely distributed on blood, stroma, epithelial, and endothelial cells (PMID: 7517044; 29503741). It can also exist as a soluble form in plasma, urine, saliva, tears, and synovial fluids (PMID: 29503741). CD55 is a complement regulatory protein (PMID: 2469439; 7517044). It inhibits formation of the C3 convertases through binding to C3b and C4b. It also binds the alternate pathway convertase C3bBb, the classical pathway convertase and C4b2a to accelerate their decay (PMID: 17289551). CD55 also serves as a receptor for coxsackieviruses B1, B3, and B5 and several enteroviruses (PMID: 7538177; 7517044). The observed molecular weight of mature CD55 varies between 50 to 100 kDa depending on the cell type. Different sizes of CD55 might be caused by alternative splicing or different glycosylation patterns (PMID: 29503741).


Product Specific Protocols
WB protocol for CD55 antibody 26580-1-APDownload protocol
IHC protocol for CD55 antibody 26580-1-APDownload protocol
IF protocol for CD55 antibody 26580-1-APDownload protocol
Standard Protocols
Click here to view our Standard Protocols



Clin Exp Immunol

Mitigating placental injuries through up-regulating DAF in experimental APS mice:new mechanism of progesterone.

Authors - Yingchun Zhang

J Proteomics

Quantitative proteomic analysis of scleras in guinea pig exposed to wavelength defocus.

Authors - Yingying Wen


Total coumarin derivates from Hydrangea paniculata attenuate renal injuries in cationized-BSA induced membranous nephropathy by inhibiting complement activation and interleukin 10-mediated interstitial fibrosis.

Authors - Weida Wang