Anti-Hepatitis C Virus NS4a protein Antibody (Biotin) [S4-13]

The S4-13 clone from Antibodies.com is a mouse monoclonal antibody directed against the NS4a non-structural protein of Hepatitis C Virus, biotinylated for sensitive detection in streptavidin-based assays. NS4a is a small viral accessory protein that anchors the viral replication complex, making it a useful marker in HCV research. The biotin label enables signal amplification when paired with streptavidin-HRP in ELISA or with streptavidin-fluorophore conjugates in immunofluorescence, eliminating the need for a species-matched secondary antibody. This reagent is supplied as a liquid preparation at 50 µg and should be stored refrigerated, protected from light, with aliquots recommended to limit freeze-thaw cycles. Researchers commonly apply the antibody to western blot detection of NS4a in transfected or infected cell lysates, to indirect immunofluorescence on fixed cells, and to ELISA-based viral antigen quantification.