| Description | α-(difluoromethyl)-DL-Arginine (RMI 71897) is an enzyma-activated, irreversible inhibitor of arginine decarboxylase for E. coli (Ki = 800 μM), Pseudomonas aeruginosa, and Klebsiella pneumoniae. At 0.01 mM, it has been shown to prevent osmotic stress-induced increases in arginine decarboxylase activity and putrescine synthesis in oat leaf cells. When combined with a variety of polyamine analogues, α-(difluoromethyl)-DL-Arginine inhibited the growth of Trypanosoma Crui in mammalian host cells at a minimum concentration of 10 mM and prevented the growth of Trypanosoma Crui in T-cell receptor alpha-deficient mouse models. |
| Synonyms | DFMA, RMI 71897, α-(difluoromethyl)-DL-Arginine |
| molecular weight | 224.21 |
| Molecular formula | C7H14F2N4O2 |
| CAS | 69955-43-7 |
| Storage | keep away from moisture | Powder: -20°C for 3 years | In solvent: -80°C for 1 year |
| Solubility | PBS (pH 7.2): 5 mg/mL PBS: 4.5 mg/mL (20.1 mM) |
| References | 1. Gill, S.S., et al. Polyamines and abiotic stress tolerance in plants. Plant Signal. Behav. 5(1), 26-33 (2010). 2. A Kallio, et al. DL-α-(Difluoromethyl)arginine: A potent enzyme-activated irreversible inhibitor of bacterial decarboxylases. Biochemistry 20(11), 3163-3168 (1981). 3. Tiburcio, A.F, et al. Polyamine metabolism and osmotic stress. II. Improvement of oat protoplasts by an inhibitor of arginine decarboxylase. Plant Physiology 82, 375-378 (1986). 4. Flores, H.E, et alPolyamines and plant stress: Activation of putrescine biosynthesis by osmotic shock. Science 217(4566), 1259-1261 (1982). 5. Kierszenbaum, F, et al. Arginine decarboxylase inhibitors reduce the capacity of Trypanosoma cruzi to infect and multiply in mammalian host cells. Proceedings of the National Academy of Sciences of the United States of America 84(12), 4278-4282 (1987). 6. Nigel Yarlett, et al. Activities of DL-α-difluoromethylarginine and polyamine analogues against Cryptosporidium parvum infection in a T-cell receptor α-deficient mouse model. Antimicrobial Agents and Chemotherapy 51(4), 1234-1239 (2007). |