Coronavirus recombinant proteins are widely used in virology, immunology, vaccine development, and therapeutic research. eEnzyme provides a broad portfolio of recombinant Spike, RBD, Nucleocapsid, Envelope, and Membrane proteins from SARS-CoV-2, SARS-CoV, MERS-CoV, and related variants to support antibody characterization, assay development, host-receptor interaction studies, and drug discovery programs.