• Nature

  • Source

    Baculovirus infected Sf9 cells
  • Amino Acid Sequence
    • Accession
    • Species

    • Molecular weight

      157 kDa
    • Amino acids

      299 to 1686


Our Abpromise guarantee covers the use of ab133141 in the following tested applications.

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

  • Biological activity

    The specific activity of ab133141 was determined to be 22 nmol/min/mg.
  • Applications

    Western blot


    Functional Studies

  • Purity

    > 70 % Densitometry.

  • Form

  • Additional notes

     This product was previously labelled as PI 3 Kinase Class 2A


  • Concentration information loading...

Preparation and Storage

  • Stability and Storage

    Shipped on Dry Ice. Upon delivery aliquot. Store at -80°C. Avoid freeze / thaw cycle.

    pH: 7.50
    Constituents: 0.31% Glutathione, 0.002% PMSF, 0.005% DTT, 0.79% Tris HCl, 0.003% EDTA, 25% Glycerol, 0.88% Sodium chloride

    This product is an active protein and may elicit a biological response in vivo, handle with caution.

General Info

  • Alternative names

    • C2 containing phosphatidylinositol kinase
    • C2 domain containing alpha polypeptide
    • Class 2 alpha polypeptide
    • CPK
    • Cpk m
    • DKFZp686L193
    • MGC142218
    • OTTHUMP00000231763
    • P3C2A_HUMAN
    • Phosphatidylinositol 3 kinase class 2 alpha
    • Phosphatidylinositol-4-phosphate 3-kinase C2 domain-containing subunit alpha
    • Phosphoinositide 3 kinase class 2 alpha
    • Phosphoinositide 3 kinase, class 2, alpha polypeptide
    • Phosphoinositide 3-Kinase-C2-alpha
    • PI3-K-C2(ALPHA)
    • PI3-K-C2A
    • PI3K-C2-alpha
    • PI3K-C2alpha
    • PI3KC 2 alpha
    • PIK3C 2A
    • Pik3c2a
    • PtdIns-3-kinase C2 subunit alpha
    see all
  • Function

    Phosphorylates PtdIns, PtdIns4P and PtdIns(4,5)P2. May play a role in clathrin-coated endocytic vesicle formation and EGF signaling cascade. May be involved in mitosis and UV-induced damage response. May be a downstream effector in insulin signaling cascade.
  • Tissue specificity

    Expressed in columnar and transitional epithelia, mononuclear cells, smooth muscle cells, and endothelial cells lining capillaries and small venules (at protein level). Ubiquitously expressed, with highest levels in heart, placenta and ovary, and lowest levels in the kidney.
  • Sequence similarities

    Belongs to the PI3/PI4-kinase family.
    Contains 1 C2 domain.
    Contains 1 PI3K/PI4K domain.
    Contains 1 PX (phox homology) domain.
  • Post-translational

    Phosphorylated upon insulin stimulation; which may lead to enzyme activation (By similarity). Phosphorylated on Ser-259 during mitosis and upon UV irradiation; which does not change enzymatic activity but leads to proteasomal degradation. Ser-259 phosphorylation may be mediated by CDK1 or JNK, depending on the physiological state of the cell.
  • Cellular localization

    Cell membrane. Golgi apparatus. Cytoplasmic vesicle > clathrin-coated vesicle. Nucleus. Cytoplasm. According to PubMed:10766823 and PubMed:11239472, it is found in the cell membrane, the Golgi apparatus and in clathrin-coated vesicles. According to PubMed:17038310 it inserts preferentially into membranes containing PtdIns(4,5)P2. According to PubMed:11606566, it is nuclear and cytoplasmic. Associated with RNA-containing structures. According to PubMed:14563213, it is mainly cytoplasmic.
  • Information by UniProt


  • The specific activity of ab133141 was determined to be 22 nmol/min/mg.
  • SDS-PAGE analysis of ab133141.


ab133141 has not yet been referenced specifically in any publications.

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