CD55

Gene Synonyms:

Protein Names:

Organism:

Homo sapiens (Human)

Mass (kDa):

41400

Length (aa):

381

Sequence:

MTVARPSVPAALPLLGELPRLLLLVLLCLPAVWGDCGLPPDVPNAQPALEGRTSFPEDTVITYKCEESFVKIPGEKDSVICLKGSQWSDIEEFCNRSCEVPTRLNSASLKQPYITQNYFPVGTVVEYECRPGYRREPSLSPKLTCLQNLKWSTAVEFCKKKSCPNPGEIRNGQIDVPGGILFGATISFSCNTGYKLFGSTSSFCLISGSSVQWSDPLPECREIYCPAPPQIDNGIIQGERDHYGYRQSVTYACNKGFTMIGEHSIYCTVNNDEGEWSGPPPECRGKSLTSKVPPTVQKPTTVNVPTTEVSPTSQKTTTKTTTPNAQATRSTPVSRTTKHFHETTPNKGSGTTSGTTRLLSGHTCFTLTGLLGTLVTMGLLT

Proteomics (Proteome ID):

Complement decay-accelerating factor (CD antigen CD55)

Proteomics (Chromosome):

UP000005640

Mass Spectrometry:

N/A

Function [CC]:

This protein recognizes C4b and C3b fragments that condense with cell-surface hydroxyl or amino groups when nascent C4b and C3b are locally generated during C4 and c3 activation. Interaction of daf with cell-associated C4b and C3b polypeptides interferes with their ability to catalyze the conversion of C2 and factor B to enzymatically active C2a and Bb and thereby prevents the formation of C4b2a and C3bBb, the amplification convertases of the complement cascade (PubMed:7525274). Inhibits complement activation by destabilizing and preventing the formation of C3 and C5 convertases, which prevents complement damage (PubMed:28657829). {ECO:0000269|PubMed:7525274, ECO:0000305|PubMed:28657829}.; (Microbial infection) Acts as a receptor for Coxsackievirus A21, coxsackieviruses B1, B3 and B5. {ECO:0000269|PubMed:9151867}.; (Microbial infection) Acts as a receptor for Human enterovirus 70 and D68 (Probable). {ECO:0000269|PubMed:8764022}.; (Microbial infection) Acts as a receptor for Human echoviruses 6, 7, 11, 12, 20 and 21. {ECO:0000269|PubMed:7525274, ECO:0000305|PubMed:12409401}.

Metal Binding:

N/A

Site:

N/A

Tissue Specificity:

Expressed on the plasma membranes of all cell types that are in intimate contact with plasma complement proteins. It is also found on the surfaces of epithelial cells lining extracellular compartments, and variants of the molecule are present in body fluids and in extracellular matrix.

Disease:

Complement hyperactivation, angiopathic thrombosis, and protein-losing enteropathy (CHAPLE) [MIM:226300]: An autosomal recessive disease characterized by abdominal pain and diarrhea, primary intestinal lymphangiectasia, edema due to hypoproteinemia, malabsorption, and less frequently, bowel inflammation, recurrent infections, and angiopathic thromboembolic disease. Patients' T lymphocytes show increased complement activation causing surface deposition of complement and the generation of soluble C5a. {ECO:0000269|PubMed:28657829, ECO:0000269|PubMed:28657861}. Note=The disease is caused by mutations affecting the gene represented in this entry. CHAPLE is caused by biallelic mutations in the CD55 gene.

Mutagenesis:

N/A

Name:

Complement decay-accelerating factor (CD antigen CD55)

Class:

Subcategory:

Recombinant

Source:

Species:

Human

Amino Acid Sequence:

Tag:

Format:

Lyophilized

Formulation:

Sterile-filtered colorless solution

Formulation Concentration:

1mg/ml

Buffer Volume:

Standard

Buffer Solution:

PBS

pH:

7.4-7.5

NaCl:

Null

EDTA:

Null

Purity:

> 98%

Determined:

SDS-PAGE

Stained:

Inquire

Validated:

RP-HPLC

Storage:

-20°C

Stability:

This bioreagent is stable at 4°C (short-term) and -70°C(long-term). After reconstitution, sample may be stored at 4°C for 2-7 days and below -18°C for future use.

Preparation:

Reconstitute in sterile distilled H2O to no less than 100ug/ml; dilute reconstituted stock further in other aqueous solutions if needed. Please review COA for lot-specific instructions. Final measurements should be determined by the end-user for optimal performance.