Tp53 binding partners interact with the transactivation domains (TAD-1, TAD-2) within the amino-terminal domain (NTD), the DNA-binding domain (DBD), the tetramerization domain (tet) and the basic carboxy-terminus  domain (CTD) of Tp53 to modulate its activity and promote distinct responses. For more information check PMID 20679336. The gene partners are listed by interacting domains, with aliases in parentheses, full names and links to gene report pages:

NTD
Pin1 (UBL5, NIMA-interacting) – peptidylprolyl cis/trans isomerase, NIMA-interacting 1

DBD
Znf385a (HZF) – zinc finger protein 385a
Pou4f1 (Brn-3A) – POU class 4 homeobox 1
Ppp1r13b (ASPP1, apoptosis-stimulating of p53 protein 1) – protein phosphatase 1, regulatory subunit 13B
Tp53bp2 (ASPP2, apoptosis-stimulating of p53 protein 2) – tumor protein p53 binding protein, 2
Ppp1r13l (IASPP, inhibitor of apoptosis stimulating protein of p53) – protein phosphatase 1, regulatory subunit 13 like

tet
Abl1 (c-ABL) – ABL proto-oncogene 1, non-receptor tyrosine kinase

CTD
Muc1 (ADMCKD, ADMCKD1) – mucin 1, cell surface associated
Ybx1 (YB-1, Yb1) – Y box binding protein 1
Znf420 (APAK, ATM and p53-associated KZNF protein) – zinc finger protein 420
Brca1 (breast cancer 1, early onset) – BRCA1, DNA repair associated
Pou4f2 (Brn3b) – POU class 4 homeobox 2
Znhit1 (p18 Hamlet) – zinc finger, HIT-type containing 1