Automated description from the Alliance of Genome Resources (Release 7.1.0)
Enables calcium-dependent protein serine/threonine phosphatase regulator activity. Acts upstream of or within penetration of zona pellucida. Located in sperm mitochondrial sheath. Part of calcineurin complex. Is expressed in several structures, including brain; lung; male reproductive gland or organ; renal vasculature; and upper jaw molar. Orthologous to human PPP3R2 (protein phosphatase 3 regulatory subunit B, beta).