# pathway leucine step aapM # Singleton 1 TCDB::Q52814 3.A.1.3.8 Rhizobium leguminosarum (biovar viciae) heteromeric Singleton1 AapM, component of General L-amino acid porter; transports basic and acidic amino acids preferentially, but also transports aliphatic amino acids (catalyzes both uptake and efflux) curated:TCDB::Q52814