Membrane modifying linear polypeptide antibiotics

Nagaraj, R. ; Balaram, P. (1980) Membrane modifying linear polypeptide antibiotics Proceedings of the Indian National Science Academy - Part A: Physical Sciences . pp. 199-218. ISSN 0370-0046

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Peptides Possessing antibiotic activity isolated from microbial sources have been the subject of intensive structural and biological investigation over the past two decades. Perhaps, the discovery and widespread use of penicillin, a molecule biosynthetically derived from a tripeptide precursor, as a strong antibacterial agent, has provided the necessary impetus for the detailed study of microbial peptides. While many of these peptides have not been used clinically, They show unique metal binding properties and often possess the ability to modify the electrical properties or ion permeabilities of artificial lipid membranes. Hence, these peptides have been used extensively to study transmembrane ion transport processes in model and natural systems like mitochondria, chloroplasts and plasma membranes.

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