Anti-SPATA31D3 antibodies are used in the immunodetection of the protein SPATA31 subfamily D member 3. In humans, the canonical protein has a reported length of 917 amino acid residues and a mass of 102.4 kDa. Its subcellular localization is in the membrane. A member of the SPATA31 protein family, SPATA31D3 is believed to play a role in spermatogenesis. Synonyms for this target antigen include FAM75-like protein FLJ44082, Putative FAM75-like protein FLJ44082, family with sequence similarity 75, member D3, putative protein FAM75D3, and spermatogenesis-associated protein 31D3.