• Product nameAnti-CD59 antibody [MEM-43]
    See all CD59 primary antibodies
  • Description
    Mouse monoclonal [MEM-43] to CD59
  • Tested applicationsSuitable for: Flow Cyt, ICC/IF, IHC-Fr, IHC-P, ELISAmore details
  • Species reactivity
    Reacts with: Human
  • Immunogen

    Tissue/ cell preparation, Thymocytes and T lymphocytes.

  • Positive control
    • IHC-P: human placenta FFPE tissue sections. IF/ICC: Jeg3 cell line.



Our Abpromise guarantee covers the use of ab59475 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
Flow Cyt Use 0.01-0.1µg for 106 cells. ab170191-Mouse monoclonal IgG2a, is suitable for use as an isotype control with this antibody.
ICC/IF Use at an assay dependent concentration.
IHC-Fr Use at an assay dependent concentration.
IHC-P Use a concentration of 5 µg/ml. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.
ELISA Use a concentration of 7 µg/ml. PubMed: 19454698


  • FunctionPotent inhibitor of the complement membrane attack complex (MAC) action. Acts by binding to the C8 and/or C9 complements of the assembling MAC, thereby preventing incorporation of the multiple copies of C9 required for complete formation of the osmolytic pore. This inhibitor appears to be species-specific. Involved in signal transduction for T-cell activation complexed to a protein tyrosine kinase.
    The soluble form from urine retains its specific complement binding activity, but exhibits greatly reduced ability to inhibit MAC assembly on cell membranes.
  • Involvement in diseaseDefects in CD59 are the cause of CD59 deficiency (CD59D) [MIM:612300].
  • Sequence similaritiesContains 1 UPAR/Ly6 domain.
  • Post-translational
    N- and O-glycosylated. The N-glycosylation mainly consists of a family of biantennary complex-type structures with and without lactosamine extensions and outer arm fucose residues. Also significant amounts of triantennary complexes (22%). Variable sialylation also present in the Asn-43 oligosaccharide. The predominant O-glycans are mono-sialylated forms of the disaccharide, Gal-beta-1,3GalNAc, and their sites of attachment are probably on Thr-76 and Thr-77. The GPI-anchor of soluble urinary CD59 has no inositol-associated phospholipid, but is composed of seven different GPI-anchor variants of one or more monosaccharide units. Major variants contain sialic acid, mannose and glucosamine Sialic acid linked to an N-acetylhexosamine-galactose arm is present in two variants.
    Glycated. Glycation is found in diabetic subjects, but only at minimal levels in nondiabetic subjects. Glycated CD59 lacks MAC-inhibitory function and confers to vascular complications of diabetes.
  • Cellular localizationCell membrane. Secreted. Soluble form found in a number of tissues.
  • Information by UniProt
  • Database links
  • Alternative names
    • 16.3A5 antibody
    • 1F5 antibody
    • 1F5 antigen antibody
    • 20 kDa homologous restriction factor antibody
    • CD 59 antibody
    • CD_antigen=CD59 antibody
    • CD59 antibody
    • CD59 antigen antibody
    • CD59 antigen complement regulatory protein antibody
    • CD59 antigen p18 20 antibody
    • CD59 antigen p18-20 (antigen identified by monoclonal antibodies 16.3A5, EJ16, EJ30, EL32 and G344) antibody
    • CD59 glycoprotein antibody
    • CD59 molecule antibody
    • CD59 molecule complement regulatory protein antibody
    • CD59_HUMAN antibody
    • Cd59a antibody
    • Complement regulatory protein antibody
    • EJ16 antibody
    • EJ30 antibody
    • EL32 antibody
    • FLJ38134 antibody
    • FLJ92039 antibody
    • G344 antibody
    • HRF 20 antibody
    • HRF-20 antibody
    • HRF20 antibody
    • Human leukocyte antigen MIC11 antibody
    • Ly 6 like protein antibody
    • Lymphocytic antigen CD59/MEM43 antibody
    • MAC inhibitory protein antibody
    • MAC IP antibody
    • MAC-inhibitory protein antibody
    • MAC-IP antibody
    • MACIF antibody
    • MACIP antibody
    • MEM43 antibody
    • MEM43 antigen antibody
    • Membrane attack complex (MAC) inhibition factor antibody
    • Membrane attack complex inhibition factor antibody
    • Membrane inhibitor of reactive lysis antibody
    • MGC2354 antibody
    • MIC11 antibody
    • MIN1 antibody
    • MIN2 antibody
    • MIN3 antibody
    • MIRL antibody
    • MSK21 antibody
    • p18 20 antibody
    • Protectin antibody
    • Surface antigen recognized by monoclonal antibody 16.3A5 antibody
    • T cell activating protein antibody
    see all

Anti-CD59 antibody [MEM-43] images

  • Human peripheral blood lymphocytes stained with ab59475 (red line). Human whole blood was processed using a modified protocol based on Chow et al, 2005 (PMID: 16080188). In brief, human whole blood was fixed in 4% formaldehyde (methanol-free) for 10 min at 22°C. Red blood cells were then lyzed by the addition of Triton X-100 (final concentration - 0.1%) for 15 min at 37°C. For experimentation, cells were treated with 50% methanol (-20°C) for 15 min at 4°C. Cells were then incubated with the antibody (ab59475, 0.01μg/1x106 cells) for 30 min at 4°C. The secondary antibody used was Alexa Fluor® 488 goat anti-mouse IgG (H&L) (ab150113) at 1/2000 dilution for 30 min at 4°C. Isotype control antibody (black line) was mouse IgG2a [ICIGG2A] (ab91361, 0.1μg/1x106 cells) used under the same conditions. Unlabelled sample (blue line) was also used as a control. Acquisition of >30,000 total events were collected using a 20mW Argon ion laser (488nm) and 525/30 bandpass filter. Gating strategy - peripheral blood lymphocytes.

  • ICC/IF image of ab59475 stained Jeg3 cells. The cells were 4% formaldehyde fixed (10 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab59475, 10µg/ml) overnight at +4°C. The secondary antibody (green) was ab96879, DyLight® 488 goat anti-mouse IgG (H+L) used at a 1/250 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM

  • IHC image of CD59 staining in human placenta formalin fixed paraffin embedded tissue section, performed on a Leica BondTM system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab59475, 5µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.

    For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times.

References for Anti-CD59 antibody [MEM-43] (ab59475)

This product has been referenced in:
  • Ferreira VP  et al. The binding of factor H to a complex of physiological polyanions and C3b on cells is impaired in atypical hemolytic uremic syndrome. J Immunol 182:7009-18 (2009). ELISA ; Human . Read more (PubMed: 19454698) »

See 1 Publication for this product

Product Wall

Application Immunocytochemistry/ Immunofluorescence
Sample Human Cell (HeLa)
Specification HeLa
Permeabilization No
Fixative Paraformaldehyde

Abcam user community

Verified customer

Submitted Jun 06 2014

Thank you for your inquiry.

I can confirm that the immunogen for ab59475 were whole cells and not a peptide or full length single protein.

The antibody recognized the extracellular part of CD59. We have not tested if it also recogni...

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