carbamoyl phosphate + L-lysine <=> L-homocitrulline + phosphate + H(+)
carbamoyl phosphate + l-lysine <=> l-homocitrulline + phosphate + h(+)
carbamoyl phosphate + L-lysine <=> L-homocitrulline + phosphate + H(+)
carbamoyl phosphate + l-lysine <=> l-homocitrulline + phosphate + h(+)