This family contains ATPases involved in plasmid partitioning [1]. It also contains the cytosolic Fe-S cluster assembling factor NBP35 which is required for biogenesis and export of both ribosomal subunits [2].

1: A family of ATPases involved in active partitioning of diverse bacterial plasmids. Motallebi-Veshareh M, Rouch DA, Thomas CM; Mol Microbiol 1990;4:1455-1463. PMID:2149583

2: The eukaryotic P loop NTPase Nbp35: an essential component of the cytosolic and nuclear iron-sulfur protein assembly machinery. Hausmann A, Aguilar Netz DJ, Balk J, Pierik AJ, Muhlenhoff U, Lill R; Proc Natl Acad Sci U S A. 2005;102:3266-3271. PMID:15728363