YabA is involved in initiation control of chromosome replication [1]. It interacts with both DnaA and DnaN, acting as a bridge between these two proteins [2].

1: An expanded view of bacterial DNA replication. Noirot-Gros MF, Dervyn E, Wu LJ, Mervelet P, Errington J, Ehrlich SD, Noirot P; Proc Natl Acad Sci U S A. 2002;99:8342-8347. PMID:12060778

2: The functional analysis of YabA, which interacts with DnaA and regulates initiation of chromosome replication in Bacillus subtils. Cho E, Ogasawara N, Ishikawa S; Genes Genet Syst. 2008;83:111-125. PMID:18506095