1.1.1.4 (R,R)-butanediol biosynthesis - - PWY-5951 1.1.1.4 (R,R)-butanediol degradation - - PWY3O-246 1.1.1.4 acetoin degradation acetoin degradation - - 1.1.1.4 Biosynthesis of secondary metabolites - 01110 - 1.1.1.4 Butanoate metabolism - 00650 -