  *** rSmad2[32P] phos[32P-ATP] is increased by rErk1{act}
    *** cells: none
    *** inhibited by: rSmad2(T8V/T220V/S245A/S250A/S255A) [substitution]
    *** source: 12193595-Fig-2d
  *** rSmad2[32P] phos[32P-ATP] is increased by rErk2(mnr)"CA"
    *** cells: none
    *** inhibited by: rSmad2(T220V/S245A/S250A/S255A) [substitution]
    *** source: 10197981-Fig-5d

