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| Formula | C4H10NO5P |
| Molar mass | 183.100 g·mol−1 |
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Fosmidomycin is an antibiotic that was originally isolated from culture broths of bacteria of the genus Streptomyces . [1] It specifically inhibits DXP reductoisomerase, a key enzyme in the non-mevalonate pathway of isoprenoid biosynthesis. It is a structural analogue of 2-C-methyl-D-erythrose 4-phosphate. It inhibits the E. coli enzyme with a KI value of 38 nM (4), MTB at 80 nM, and the Francisella enzyme at 99 nM. [2] Several mutations in the E. coli DXP reductoisomerase were found to confer resistance to fosmidomycin. [3] [4]
The discovery of the non-mevalonate pathway in malaria parasites has indicated the use of fosmidomycin and other such inhibitors as antimalarial drugs. [5] Indeed, fosmidomycin has been tested in combination treatment with clindamycin for treatment of malaria with favorable results. [6] [7] [8] It has been shown that an increase in copy number of the target enzyme (DXP reductoisomerase) correlates with in vitro fosmidomycin resistance in the lethal malaria parasite, Plasmodium falciparum . [9]