taurocholate + L-alanine <=> L-alanocholate + taurine
taurocholate + l-alanine <=> l-alanocholate + taurine
taurocholate + L-alanine <=> L-alanocholate + taurine
taurocholate + l-alanine <=> l-alanocholate + taurine