"","highest_category","freq"
"1"," Carbohydrate metabolism",4
"2"," Endocrine system",4
"3"," Signal transduction",4
"4"," Energy metabolism",2
"5"," Amino acid metabolism",1
"6"," Endocrine and metabolic disease",1
"7"," Excretory system",1
"8"," Folding, sorting and degradation",1
"9"," Metabolism of cofactors and vitamins",1
"10"," Poorly characterized",1
"11"," Protein families: genetic information processing",1
"12"," Protein families: signaling and cellular processes",1
