Enables serine-type carboxypeptidase activity. Involved in negative regulation of blood pressure. Acts upstream of or within blood vessel diameter maintenance. Predicted to be located in cytosol. Is expressed in several structures, including central nervous system; early conceptus; genitourinary system; gut; and musculature. Orthologous to human SCPEP1 (serine carboxypeptidase 1). [provided by Alliance of Genome Resources, Apr 2022]