4.1.1.33 ATP + (R)-5-diphosphomevalonate = ADP + phosphate + isopentenyl diphosphate + CO2 catalytic mechanism of this rare type of decarboxylase, the enzyme is bifunctional showing the reactions of diphosphomevalonate decarboxylase (EC 4.1.1.33) and mevalonate 3-kinase (EC 2.7.1.185), overview -, 759486 4.1.1.33 ATP + (R)-5-diphosphomevalonate = ADP + phosphate + isopentenyl diphosphate + CO2 mechanism 4371 4.1.1.33 ATP + (R)-5-diphosphomevalonate = ADP + phosphate + isopentenyl diphosphate + CO2 ordered sequential mechanism with mevalonate 5-diphosphate as the first substrate to bind to the enzyme 4385 4.1.1.33 ATP + (R)-5-diphosphomevalonate = ADP + phosphate + isopentenyl diphosphate + CO2 sequential mechanism 4374 4.1.1.33 ATP + (R)-5-diphosphomevalonate = ADP + phosphate + isopentenyl diphosphate + CO2 thiophosphoryl group transfer proceeds with inversion of configuration at phosphorus 4379