gibberellin biosynthetic process gibberellin 12 biosynthetic process biological_process gibberellin 12 anabolism gibberellin 12 formation The chemical reactions and pathways resulting in the formation of gibberellin 12, (1R,2S,3S,4R,8S,9S,12R)-4,8-dimethyl-13-methylidenetetracyclo[10.2.1.01,9.03,8]pentadecane-2,4-dicarboxylic acid 1meta,4a-dimethyl-8-methylidene-4aalpha,4bbeta-gibbane-1alpha,10beta-dicarboxylic acid. GA12 biosynthetic process MetaCyc:PWY-5034 GO:0033470 gibberellin A12 biosynthetic process gibberellin 12 biosynthesis gibberellin 12 synthesis dicarboxylic acid biosynthetic process