Enables prolactin receptor activity and protein kinase binding activity. Predicted to be involved in several processes, including activation of protein kinase activity; cytokine-mediated signaling pathway; and positive regulation of cold-induced thermogenesis. Predicted to act upstream of or within several processes, including gland development; receptor signaling pathway via JAK-STAT; and response to bacterium. Predicted to be located in cell surface. Predicted to be part of receptor complex. Predicted to be active in external side of plasma membrane. Human ortholog(s) of this gene implicated in hyperprolactinemia. Orthologous to human PRLR (prolactin receptor). [provided by Alliance of Genome Resources, Apr 2022]