Non-essential cell division protein that could be required for efficient cell constriction. Localizes at the septal ring. The SPOR domain binds septal peptidoglycans and is required to target DedD to the septal ring. Deletion causes a mild cell chaining phenotype (PubMed:19684127). Double dedD-drpB deletion mutants grow 1000-fold less well at 42 degrees Celsius and are filamentous when grown on LB, no effect is seen in low osmolarity medium; few septa are observed (PubMed:32900831). Belongs to the DedD family. Truncated N-terminus.