Important for the colocalization of sister nascent DNA strands after replication fork passage during DNA replication, and for positioning and subsequent partitioning of sister chromosomes. Does not have GTPase activity on its own (By similarity). Forms homooligomers. Binds to the beta sliding clamp processivity factor (DnaN) in the presence and absence of DNA, may bind to the clamp itself as homodimers or trimers. Homooligomers may be able to bind more than 1 clamp complex (By similarity). About half the protein co-localizes with beta sliding clamp (DnaN) at midcell, the rest without clamp in quarter-cell positions when chromosomes are condensed during DNA replication. Belongs to the TRAFAC class dynamin-like GTPase superfamily. Dynamin/Fzo/YdjA family.