SLC35B3 Knockout Cell Line (HEK293)

The choice depends on whether you are studying SLC35B3's role as a Golgi PAPS (3'-phosphoadenosine 5'-phosphosulfate) transporter or its contributions to sulfated proteoglycan biosynthesis. The Knockout line is appropriate for asking whether SLC35B3 is required for sulfation of glycosaminoglycans and other secreted/membrane sulfated molecules. Overexpression is useful for testing PAPS transport activity in heterologous systems. For glycosaminoglycan sulfation research, the EDITGENE SLC35B3 Knockout in HEK293 is a mechanistic platform — sulfation is essential for the biological activity of heparan sulfate, chondroitin sulfate, and other sulfated GAGs. SLC35B2 paralog expression should be assessed given functional overlap in PAPS delivery to the Golgi. Rescue with wild-type or transport-deficient SLC35B3 enables structure-function studies.

Primary applications: • PAPS Golgi transport: in vitro PAPS uptake assays using isolated Golgi membranes from knockout versus wild-type cells. • Glycosaminoglycan sulfation: HPLC-based analysis of sulfated disaccharide composition in secreted GAGs to assess sulfation efficiency. • Sulfated glycoprotein analysis: ³⁵S incorporation into newly synthesized proteoglycans and sulfated glycoproteins. • Paralog studies: SLC35B2 expression analysis to assess PAPS transporter functional overlap. EDITGENE recommends this model for researchers investigating PAPS transport, sulfated GAG biosynthesis, and sulfation pathway biology.

Yes. SLC35B3 rescue experiments require attention to Golgi targeting and PAPS transport mechanism: • Construct design: use a codon-modified SLC35B3 sequence with a small C-terminal tag (FLAG, HA). Preserve transmembrane topology and Golgi targeting determinants. • Golgi localization validation: confirm Golgi localization by GM130 co-staining before functional assays. • Transport-deficient rescue: conserved residue mutations in PAPS-binding sites enable structure-function studies. • Functional readout: rescue should restore Golgi PAPS uptake (in vitro membrane assays) and downstream sulfation of GAGs and sulfated glycoproteins. HEK293 transduces efficiently with lentivirus and supports stable rescue line generation.