Modifications of an antibiotic structure that do not interfere with its intrinsic activity, i.e., with the ability to interact with its target molecule in susceptible microorganisms, can be of fundamental importance with regard to in vivo biological activity and the practical usefulness of the antibiotic. Properties such as the membrane transport (and hence the penetration into bacterial cells), absorption and distribution throughout the body, and susceptibility to the action of inactivating enzymes can be drastically influenced by modifications of the original molecule.
KeywordsMicrobial Transformation Penicillin Versus Penicillin Acylases Biological Transformation Streptomyces Aureofaciens
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