Predicted to enable signaling receptor binding activity. Involved in negative regulation of apoptotic process and regulation of cell population proliferation. Acts upstream of or within adenylate cyclase-modulating G protein-coupled receptor signaling pathway and regulation of nitric oxide mediated signal transduction. Predicted to be located in extracellular region. Orthologous to several human genes including RLN1 (relaxin 1). [provided by Alliance of Genome Resources, Apr 2022]