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