Cytokine with immunomodulatory activity. Up-regulates MHC class I antigen expression. Displays potent antiviral activity. Also displays antitumor activity. Ligand for the heterodimeric class II cytokine receptor composed of IL10RB and IL28RA. The ligand/receptor complex seems to signal through the Jak-STAT pathway. Belongs to the IL-28/IL-29 family. Note: This description may include information from UniProtKB.
Protein type: Secreted; Secreted, signal peptide
Cellular Component: extracellular space
Molecular Function: cytokine activity
Biological Process: positive regulation of immune response; negative regulation of viral genome replication; JAK-STAT cascade; defense response to virus