4.2.1.20

Tryptophan synthase beta chain
Tryptophan synthase alpha chain
Tryptophan synthase beta chain
Tryptophan synthase, beta chain (NCBI)
Tryptophan synthase, alpha chain (NCBI)
Tryptophan synthase alpha chain
Tryptophan synthase beta chain
Tryptophan synthase beta chain
tryptophan synthase alpha subunit (RefSeq)
tryptophan synthase, beta protein (RefSeq)