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The ureidopenicillins are a group of penicillins which are active against Pseudomonas aeruginosa. There are three ureidopenicillins in clinical use:

They are mostly ampicillin derivatives in which the D-side amino chain has been converted to a variety of ureas. It is speculated that the added side chain mimics a longer segment of the peptidoglycan chain, more than ampicillin, and thus would bind more easily to the penicillin-binding proteins. Ureidopenicillins are not resistant to beta-lactamases.

They are used parenterally, and are particularly indicated in infections caused by Gram-negative bacteria.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Ureidopenicillin". A list of authors is available in Wikipedia.
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