May play a role in DNA-protein cross-links (DPCs) clearance, ensuring the genomic stability by protecting germ cells and early embryos from various sources of damage (PubMed:31839537). Limits replication stress and DNA double-strand breaks (PubMed:31839537). During mitosis, associated with dividing chromosomes. Homozygous mutant females initially laid eggs but stopped after approximately one week. Many of the embryos derived from these eggs exhibited maternal-effect lethality (PubMed:31839537). The few adults from F1 progeny of homozygous mutant females appear sickly and sub-fertile. Of these, 4% display bilateral gynandromorphism a rare phenotype caused by X chromosome loss during the early embryogenesis. By contrast, embryos from homozygous mutant females displayed X chromosome bridges and second chromosome missegregation and polyploidy (PubMed:31839537). Belongs to the serine-aspartate repeat-containing protein (SDr) family.