PSK4_ARATH Phytosulfokine-alpha-like 87 At4g37720 F19F18.210 PSK4 Promotes plant cell differentiation, organogenesis and somatic embryogenesis as well as cell proliferation (By similarity). Putative phytosulfokines 4 MANLSTLITIALLLCATMLTCSARPEPAYFASFTTSPADTLSLEMIESKLHEVAGESCDKEDDEDCLVRRTLTAHLDYIYTHKNNHH Phytosulfokine-beta