Queried GO terms:

  idGO:0030202   Detailed information
  nameheparin metabolic process
  namespacebiological_process
  def"The chemical reactions and pathways involving heparin, any member of a group of glycosaminoglycans found mainly as an intracellular component of mast cells. They are similar to heparan sulfates but are of somewhat higher average Mr (6000-20000) and contain fewer N-acetyl groups and more N-sulfate and O-sulfate groups; they may be attached in the same manner to protein, forming proteoglycans. They consist predominantly of alternating alpha1->4-linked D-galactose and N-acetyl-D-glucosamine-6-sulfate residues." [GOC:mah, ISBN:0198506732 "Oxford Dictionary of Biochemistry and Molecular Biology"]
  subsetgosubset_prok
  synonym"heparan sulfate metabolic process" RELATED []
  synonym"heparin metabolism" EXACT []
  is_aGO:0006790 ! sulfur compound metabolic process
  is_aGO:0030203 ! glycosaminoglycan metabolic process

No monarch genes has this GO term.