Nur77 (Ser 351) is a protein kinase substrate suitable for kinase assays. This is a suitable substrate for Rsk-1: sc-4803 and CaMKII: sc-4807 and PKG: sc-4817and PKCα: sc-4820. Recognition Motif: X-X-R/K-X-R-X-X-S-X-X and R-X-X-S/T and R/K-X-X-S/T and K/R-X-X-S/T.