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THE ROLE OF SPECIFIC AMINO ACIDS IN THE PROTECTION OF E. COLI AGAINST B-LACTAM ANTIBIOTICS IN VITRO | ||
| Bulletin of the Iraq Natural History Museum | ||
| Article 1, Volume 8, Issue 3, 1996, Pages 15-23 | ||
| Authors | ||
| HUDA S. AMMASH; SAHAR KASSIM | ||
| Abstract | ||
| The role of specific amino acids namely cysteine, methionine, threonine and asparagine in the protection provided by vamin solution against B-lactam inhibition to E. coli was evaluated in vitro In minimal medium, cells were treated with 32 ug/ml of penicillin G, carbenciLlin, hostacillin, cloxacillin and cephalotin in the presence of specific amino acid supplementation. Deletion of specific amino acids from the media abolished the protection provided by vamin. Threonine was essential for the protection of cells against all tested antibiotics, while cysteine was essential for protection against carbencillin and sephalotin. Deletion of methionine or asparagine abolished the protection against carbencillin and to a less extent cephalotin. | ||
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