L-alanyl-D-glutamate(out) => L-alanyl-D-glutamate(in)
l-alanyl-d-glutamate(out) => l-alanyl-d-glutamate(in)
L-alanyl-D-glutamate(out) => L-alanyl-D-glutamate(in)
l-alanyl-d-glutamate(out) => l-alanyl-d-glutamate(in)