peptide substrate for ERK 1 and ERK 2 MAP kinases, 0.5 mg/0.1 ml
sequence: R R R E L V E PLTP S G E (>97% pure by HPLC)
corresponds to amino acids 663-673 of EGFR including Thr 669 within the Pro-X-Ser/Thr Pro MAP kinase substrate consensus sequence (plus 3 NH-2-terminal Arg residues to confer basic charge)