3-methyl-2-oxobutanoate(out) + H(+)(out) = 3-methyl-2-oxobutanoate(in) + H(+)(in)
3-methyl-2-oxobutanoate(out) + h(+)(out) = 3-methyl-2-oxobutanoate(in) + h(+)(in)
3-methyl-2-oxobutanoate(out) + H(+)(out) = 3-methyl-2-oxobutanoate(in) + H(+)(in)
3-methyl-2-oxobutanoate(out) + h(+)(out) = 3-methyl-2-oxobutanoate(in) + h(+)(in)