Non-viral proteins

Non-viral proteins encompass non-viral sourced proteins commonly used in virology research and diagnostics—mainly host receptors and cofactors required for viral entry (ACE2, TMPRSS2, DPP4, CD4, CCR5, CXCR4, AXL) plus internal controls, reference proteins, and antibody-related molecules. These host factors are essential tools for understanding viral entry, building pseudovirus cell models, and evaluating neutralizing-antibody blockade, and are widely used in receptor–ligand interaction, drug screening, and diagnostic quality control. Recombinant host receptors and cofactors support viral-entry mechanism studies, receptor-binding assays, cell-model construction, and antiviral development.