Cell Signaling Technology

Product Pathways - Wnt / Hedgehog / Notch

CD133 (C24B9) Rabbit mAb #3663

Applications Reactivity MW (kDa) Source Isotype
W IP IHC-P F H 133 Rabbit IgG

Applications Key:  W=Western Blotting  IP=Immunoprecipitation  IHC-P=Immunohistochemistry (Paraffin)  F=Flow Cytometry
Reactivity Key:  H=Human
Species enclosed in parentheses are predicted to react based on 100% sequence homology. Species cross-reactivity is determined by Western blot.

Specificity / Sensitivity

CD133 (C24B9) Rabbit mAb detects endogenous levels of total CD133 protein.

Source / Purification

Monoclonal antibodies are produced by immunizing rabbits with a synthetic peptide (KLH-coupled) corresponding to a region (predicted to be extracellular) surrounding Asp562 of human CD133.

Western Blotting

Western Blotting

Western blot analysis of total cell lysates from various cell types using CD133 (C24B9) Rabbit mAb.

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded CaCo-2 (left) or HeLa cells (right) using CD133 (C24B9) Rabbit mAb. Note: HeLa cells lack CD133.

Flow Cytometry

Flow Cytometry

Flow cytometric analysis of unpermeabilized NCCIT cells using CD133 (C24B9) Rabbit mAb (blue) compared to a nonspecific negative control antibody (red).


Background

CD133, also known as Prominin, was first described as a cell surface marker recognized by monoclonal antibody AC133 on putative hematopoietic stem cells (1). Subsequent cDNA cloning indicated that CD133 is a five-transmembrane protein with a predicated molecular weight of 97 kDa. Due to heavy glycosylation, its apparent molecular weight is 130 kDa as determined by SDS-PAGE analysis (2). Besides blood stem cells, CD133 is expressed on and used to isolate other stem cells, including cancer stem cells (3-7). A deletion mutation in CD133 produces aberrant protein localization and may results in retinal degeneration in humans (8).

  1. Yin, A.H. et al. (1997) Blood 90, 5002-5012.
  2. Miraglia, S. et al. (1997) Blood 90, 5013-5021.
  3. Handgretinger, R. et al. (2003) Ann. N.Y. Acad. Sci. 996, 141-151.
  4. Monzani, E. et al. (2007) Eur. J. Cancer 43, 935-946.
  5. O'Brien, C.A. et al. (2007) Nature 445, 106-110.
  6. Ricci-Vitiani, L. et al. (2007) Nature 445, 111-115.
  7. Singh, S.K. et al. (2004) Nature 432, 396-401.
  8. Maw, M.A. et al. (2000) Hum. Mol. Genet. 9, 27-34.

Application References

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