Protein kinase that phosphorylates human TP53 at Ser-9, and thus induces TP53 repression of BIRC5 promoter (By similarity). May act as a corepressor of transcription factors (Potential). {ECO:0000250, ECO:0000305}. This is the function of ENSG00000160396 (HIPK4, homeodomain interacting protein kinase 4).