L-isoleucine(out) + L-phenylalanine(in) => L-isoleucine(in) + L-phenylalanine(out)
l-isoleucine(out) + l-phenylalanine(in) => l-isoleucine(in) + l-phenylalanine(out)
L-isoleucine(out) + L-phenylalanine(in) => L-isoleucine(in) + L-phenylalanine(out)
l-isoleucine(out) + l-phenylalanine(in) => l-isoleucine(in) + l-phenylalanine(out)