Alternative definition : BIOCARTA: p53 is a transcription factor who's activity is regulated by phosphorylation.
The function is p53 is to keep the cell from progressing through the cell cycle if
there is damage to DNA present. It may do this in multiple ways from holding the cell
at a checkpoint until repairs can be made to causing the cell to enter apoptosis if
the damage cannot be repaired. The critical role of p53 is evidenced by the fact that
it is mutated in a very large fraction of tumors from nearly all sources. (This definition
may be outdated - see the DesignNote.);
NCIt note : The BIOCARTA Definition (ALT_DEFINITION) for this pathway concept was provided by
BioCarta. This property was not created by, nor is it maintained by the NCI Thesaurus
staff. Additionally, BioCarta is no longer updating its pathway data; thus, the BIOCARTA
Definition might be outdated or inaccurate. Please see the Terms and Conditions for
Use at http://www.biocarta.com/.;