Chromosomal replication initiator protein DnaA (IPR013317)

Short name: DnaA

Overlapping homologous superfamilies

Domain relationships



This entry represents the central domain of bacterial DnaA proteins [PMID: 8110826, PMID: 1779750, PMID: 2558436] which play an important role in initiating and regulating chromosomal replication. DnaA is an ATP- and DNA-binding protein. It binds specifically to 9 bp nucleotide repeats known as dnaA boxes which are found in the chromosome origin of replication (oriC).

DnaA is a protein of about 50 kDa that contains two conserved regions: the first is located in the N-terminal half and corresponds to the ATP-binding domain, the second is located in the C-terminal half and could be involved in DNA-binding. The protein may also bind the RNA polymerase beta subunit, the dnaB and dnaZ proteins, and the groE gene products (chaperonins) [PMID: 2172087].

Contributing signatures

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