Invitrogen

Human CD55 (aa 224-378) Control Fragment Recombinant Protein

Product Details

RP-95416

Applications

Tested Dilution

Publications

Control (Ctrl)

Assay-dependent

Blocking Assay (BLOCK)

Assay-dependent

Product Specifications

Species

Human

Expression System

E. coli

Amino acid sequence

YCPAPPQIDNGIIQGERDHYGYRQSVTYACNKGFTMIGEHSIYCTVNNDEGEWSGPPPECRGKSLTSKVPPTVQKPTTVNVPTTEVSPTSQKTTTKTTTPNAQATRSTPVSRTTKHFHETTPNKGSGTTSGTTRLLSGHTCFTLTGLLGTLVTMG

Tag

His-ABP-tag

Class

Recombinant

Type

Protein

Purity

>80% by SDS-PAGE and Coomassie blue staining

Conjugate

Unconjugated Unconjugated Unconjugated

Form

Liquid

Concentration

≥5.0 mg/mL

Purification

purified

Storage buffer

PBS/1M urea, pH 7.4

Contains

no preservative

Storage conditions

-20°C, Avoid Freeze/Thaw Cycles

Product Specific Information

Highest antigen sequence indentity to the following orthologs: Mouse (42%), Rat (42%).

This recombinant protein control fragment may be used for blocking experiments with the corresponding antibody, PA5-82005. In IHC/ICC and WB experiments, we recommend a 100x molar excess of the protein fragment control based on the concentration and the molecular weight. Pre-incubate the antibody-protein control fragment mixture for 30 min at room temperature.

Target Information

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 predominant 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.

For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.

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Bioinformatics

Protein Aliases: CD55; CD55 antigen; CD55 molecule, decay accelerating factor for complement (Cromer blood group); Complement decay-accelerating factor; RP11-357P18.1