Predicted to enable virion binding activity. Acts upstream of or within positive regulation of T cell apoptotic process and positive regulation of extrinsic apoptotic signaling pathway. Predicted to be located in extracellular region and membrane. Predicted to be integral component of membrane. Predicted to be active in early endosome; late endosome; and plasma membrane. Is expressed in immune system; reproductive system; and skin. Orthologous to human SIGLEC1 (sialic acid binding Ig like lectin 1). [provided by Alliance of Genome Resources, Apr 2022]