Ampicillin (Amp) At Biology Glossary
What is it? An antibiotic that inhibits crosslinking of peptidoglycan chains in the cell wall of eubacteria. Cells growing in the presence of ampicillin synthesize weak cell walls, causing them to burst due to the high internal osmotic pressure. Amp resistance encoded by most transposons and plasmids is due to a periplasmic Beta-lactamase that breaks the Beta-lactam ring of ampicillin. Ampicillin is a derivative of penicillin.Bio Definition Added By: Alyssa
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