Characterization of cells and gene-targeted mice deficient for the p53-binding kinase homeodomain-interacting protein kinase 1 (HIPK1)

Abstract excerpt

The tumor suppressor p53 is regulated in part by binding to cellular proteins. We used p53 as bait in the yeast two-hybrid system and isolated homeodomain-interacting protein kinase 1 (HIPK1) as a p53-binding protein. Deletion analysis showed that amino acids 100-370 of p53 and amino acids 885-1093 of HIPK1 were sufficient for HIPK1-p53 interaction. HIPK1 was capable of autophosphorylation and specific serine...

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