Enables carbohydrate binding activity. Acts upstream of or within T cell costimulation; myoblast differentiation; and plasma cell differentiation. Located in extracellular space. Is expressed in several structures, including embryo mesenchyme; genitourinary system; integumental system; main olfactory bulb; and olfactory system. Orthologous to human LGALS1 (galectin 1). [provided by Alliance of Genome Resources, Apr 2022]