Predicted to be involved in several processes, including cellular response to lipopolysaccharide; negative regulation of cytokine production; and regulation of T cell activation. Predicted to be active in external side of plasma membrane. Orthologous to human PDCD1LG2 (programmed cell death 1 ligand 2); INTERACTS WITH 2,3,7,8-tetrachlorodibenzodioxine; alpha-Zearalanol; bisphenol A.