Abstract
The prokaryotic nucleoid-associated protein (NAP) HU is both highly conserved and ubiquitous. Deletion of HU causes pleiotropic phenotypes, making it difficult to uncover the critical functions of HU within a bacterial cell. In their recent work, Karaboja and Wang (J Bacteriol 204:e00119-22, 2022, https://doi.org/10.1128/JB.00119-22) show that one essential function of Bacillus subtilis HU (HBsu) is to drive the DnaA-dependent initiation of DNA replication at the chromosome origin. We discuss the possible roles of HBsu in replication initiation and other essential cellular functions.
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