taurocholate + L-phenylalanine = L-phenylalanocholate + taurine
taurocholate + l-phenylalanine = l-phenylalanocholate + taurine
taurocholate + L-phenylalanine = L-phenylalanocholate + taurine
taurocholate + l-phenylalanine = l-phenylalanocholate + taurine