p53, DNA-binding domain (IPR011615)

Short name: p53_DNA-bd

Domain relationships


This domain is found in p53 transcription factors, where it is responsible for DNA-binding. These transcription factors play diverse roles in the regulation of cellular functions: the p53 tumour suppressor upregulates the expression of genes involved in cell cycle arrest and apoptosis [PMID: 12826037]. The DNA-binding domain acts to clamp, or in the case of TonEBP, encircle the DNA target in order to stabilise the protein-DNA complex [PMID: 11780147]. Protein interactions may also serve to stabilise the protein-DNA complex, for example in the STAT-1 dimer the SH2 (Src homology 2) domain in each monomer is coupled to the DNA-binding domain to increase stability [PMID: 9630226]. The DNA-binding domain consists of a beta-sandwich formed of 9 strands in 2 sheets with a Greek-key topology. This structure is found in many transcription factors, often within the DNA-binding domain.

GO terms

Biological Process

No terms assigned in this category.

Molecular Function

GO:0044212 transcription regulatory region DNA binding

Cellular Component

No terms assigned in this category.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.