Predicted to enable carbohydrate binding activity. Predicted to be an extracellular matrix structural constituent conferring compression resistance. Acts upstream of or within defense response to nematode; negative regulation of interleukin-10 production; and positive regulation of interleukin-4 production. Located in collagen-containing extracellular matrix. Is expressed in several structures, including immune system; liver; lung; and testis. Orthologous to human PRG2 (proteoglycan 2, pro eosinophil major basic protein). [provided by Alliance of Genome Resources, Apr 2022]