Cell Signaling Technology

Product Pathways - Cell Cycle / Checkpoint

PCTAIRE 1 Antibody #4852

Applications Reactivity Sensitivity MW (kDa) Source
W IP F M R (H) Endogenous 65 Rabbit

Applications Key:  W=Western Blotting  IP=Immunoprecipitation  F=Flow Cytometry
Reactivity Key:  H=Human  M=Mouse  R=Rat
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.

Protocols

Specificity / Sensitivity

PCTAIRE 1 Antibody detects endogenous levels of total PCTAIRE 1.

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to the sequence of human PCTAIRE 1. Antibodies are purified by protein A and peptide affinity chromatography.

Western Blotting

Western Blotting

Western blot analysis of extracts from CAD and Neuro2A cells, using PCTAIRE 1 Antibody.

Flow Cytometry

Flow Cytometry

Flow cytometric analysis of untreated Neuro 2A cells, using PCTAIRE 1 antibody (blue) compared to a nonspecific negative control antibody (red).

Background

Three distinct PCTAIRE isoforms (PCTAIRE 1, PCTAIRE 2 and PCTAIRE 3) have been identified in humans and belong to the CDK family of serine/threonine protein kinases. These proteins have a core kinase domain flanked by unique amino- and carboxy-terminal domains. CDK proteins are known to regulate the cell cycle. All three PCTAIRE isoforms are abundantly expressed and catalytically active in post-mitotic brain, suggesting that they may function in processes other than cell division (1). PCTAIRE 1 is a cytoplasmic phosphoprotein whose kinase activity peaks in G2 and S phase (2). While one study indicates that noncovalent interactions with a regulatory component (such as a cyclin) are necessary for catalytic activity of PCTAIRE 1, others show that the monomeric protein is fully active (3). The Cdk5/p25 complex phosphorylates PCTAIRE 1 at Ser95, enhancing its kinase activity (4).

  1. Meyerson, M. et al. (1992) EMBO J. 11, 2909-2917 .
  2. Charrasse, S. et al. (1999) Cell Growth Differ. 10, 611-620.
  3. Graeser, R. et al. (2002) J. Cell Sci. 115, 3479-3490.
  4. Cheng, K. et al. (2002) J. Biol. Chem. 277, 31988-31993.

Application References

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For Research Use Only. Not For Use In Diagnostic Procedures.

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