The normal progression of cells through the cell cycle is under the control of the cyclin dependent protein kinases Cdk4 and Cdk6, which are subject to inhibition by the mitotic inhibitory protein p16. Isolated members of the p16 family have been designated p15 and p18. p15 expression is upregulated approximately 30-fold in TGF∫-treated human keratinocytes. The gene encoding p15 has been mapped to chromosome 9p21 at a position adjacent to the p16 gene, at a site of frequent chromosomal abnormality in human tumors. It has been suggested that p15 may function as an effector of TGF∫-mediated cell cycle arrest through inhibition of Cdk4 and Cdk6 kinase. The second p16-related protein, p18, interacts strongly with Cdk6 and to a lesser extent with Cdk4, but lacks apparent interaction with other Cdks. Recombinant p18 has been shown to inhibit cyclin D-Cdk6 kinase activity. In contrast to p21/p27 that form ternary complexes with cyclin-Cdks, only binary complexes of p15, p16 and p18 have been identified in association with Cdk4 and/or Cdk6.
Key Feature
Clonality
Polyclonal
Isotype
IgG
Host Species
Rabbit
Tested Applications
WBIPIFELISA
recommended for detection of p18 of mouse, rat and human origin by WB, IP, IF and ELISA also reactive with additional species, including equine, canine, bovine and porcine
Species Reactivity
HumanMouseRat
Concentration
1mg/ml
Purification
Affinity purified
Target Information
Alternative Names
epitope corresponding to amino acids 1-168 representing full length p18 of mouse origin
Tissue Specificity
epitope corresponding to amino acids 1-168 representing full length p18 of mouse origin
Western blot analysis of p18 expression in non-transfected: (A) and mouse p18 transfected: (B) 293T whole cell lysates.
Application
Western blot analysis of p18 expression in NIH/3T3 nuclear extract.
Application Notes
recommended for detection of p18 of mouse, rat and human origin by WB, IP, IF and ELISA also reactive with additional species, including equine, canine, bovine and porcine
Additional Information
Form
Liquid
Storage Instructions
For short-term storage, store at 4° C. For long-term storage, aliquot and store at -20ºC or below. Avoid multiple freeze-thaw cycles.