Predicted to enable gap junction channel activity. Acts upstream of or within labyrinthine layer morphogenesis; spongiotrophoblast differentiation; and trophoblast giant cell differentiation. Predicted to be located in gap junction and plasma membrane. Predicted to be integral component of membrane. Predicted to be part of connexin complex. Is expressed in early conceptus; reproductive system; sensory organ; and skin. Orthologous to human GJB5 (gap junction protein beta 5). [provided by Alliance of Genome Resources, Apr 2022]