biogenic amines and polyamines metabolic pathway +
carbohydrate metabolic pathway +
energy metabolic pathway +
lipid metabolic pathway +
metabolic pathway of cofactors, vitamins, nutrients +
metabolic pathway of other amino acids +
metabolic pathway of secondary metabolites +
metabolic pathway pertinent to the brain +
nucleotide metabolic pathway +
peptide and protein metabolic pathway +
Those metabolic reactions involved in the synthesis, folding and/or degradation of peptides and proteins, including the synthesis of protein/peptide/amino-acid based hormones.