Queried GO terms:

  idGO:0010459   Detailed information
  namenegative regulation of heart rate
  namespacebiological_process
  def"Any process that stops, prevents or reduces the frequency or rate of heart contraction." [GOC:dph, GOC:tb]
  is_aGO:0002027 ! regulation of heart rate
  is_aGO:0045822 ! negative regulation of heart contraction

No monarch genes has this GO term.