Anti-NS3 / Non-structural protein 3, clone rMMM33

1 mg/ml in 1X PBS, BSA free, sodium azide free. NS3 antibody recognizes Non-structural protein 3, a multifunctional viral protein essential for genome replication and polyprotein processing in several positive-sense RNA viruses, most notably hepatitis C virus. Non-structural protein 3, commonly referred to as NS3, contains protease and helicase domains that coordinate viral replication, RNA unwinding, and assembly of replication complexes. NS3 Antibody is designed to detect viral NS3 expression in infected cells and experimental systems studying viral life cycles and antiviral strategies.NS3 is typically synthesized as part of a larger viral polyprotein that is cleaved to generate functional viral components. The N-terminal serine protease domain requires association with its cofactor NS4A for full enzymatic activity, enabling cleavage of downstream non-structural proteins required for replication. The C-terminal region functions as an RNA helicase and NTPase, driving unwinding of viral RNA intermediates during genome replication. This dual-domain architecture makes NS3 central to viral propagation and a primary target of direct-acting antiviral drugs.In hepatitis C virus biology, NS3 localizes to cytoplasmic membranous replication complexes derived from endoplasmic reticulum membranes. Through coordinated proteolytic and helicase activity, it regulates replication complex assembly and viral RNA amplification. NS3-mediated cleavage events are also implicated in modulation of host innate immune responses, as viral protease activity can interfere with host antiviral signaling pathways.Because of its enzymatic roles and conserved sequence motifs, NS3 is widely used as a biomarker of active viral replication in research models. Detection of NS3 expression assists in evaluating viral infection dynamics, screening antiviral compounds, and characterizing replication-defective mutants. Clone rMMM33 is a recombinant mouse monoclonal antibody that recognizes Non-structural protein 3 and supports studies of viral replication, protein processing, and host-virus interaction mechanisms in controlled research applications.