(R)-5-phosphomevalonate + phosphate + H(+) => (R)-5-diphosphomevalonate + H2O
(r)-5-phosphomevalonate + phosphate + h(+) => (r)-5-diphosphomevalonate + h2o
(R)-5-phosphomevalonate + phosphate + H(+) => (R)-5-diphosphomevalonate + H2O
(r)-5-phosphomevalonate + phosphate + h(+) => (r)-5-diphosphomevalonate + h2o