A lactam is a cyclic amide, formally derived from an amino alkanoic acid through cyclization reactions. The term is a portmanteau of the words lactone...

β-Lactam antibiotics (beta-lactam antibiotics) are antibiotics that contain a β-lactam ring in their chemical structure. This includes penicillin derivatives...

A β-lactam (beta-lactam) ring is a four-membered lactam. A lactam is a cyclic amide, and beta-lactams are named so because the nitrogen atom is attached...

a four-atom ring known as a beta-lactam (β-lactam) ring. Through hydrolysis, the enzyme lactamase breaks the β-lactam ring open, deactivating the molecule's...

Penicillins (P, PCN or PEN) are a group of β-lactam antibiotics originally obtained from Penicillium moulds, principally P. chrysogenum and P. rubens....

The cephalosporins (sg. /ˌsɛfələˈspɔːrɪn, ˌkɛ-, -loʊ-/) are a class of β-lactam antibiotics originally derived from the fungus Acremonium, which was previously...

This is a list of common β-lactam antibiotics—both administered drugs and those not in clinical use—organized by structural class. Antibiotics are listed...

bacteria by disrupting the growth of the bacterial cell wall. Cefalexin is a β-lactam antibiotic within the class of first-generation cephalosporins. It works...

The Ojima lactam is an organic compound of some importance in the commercial production of Taxol. This lactam was first synthesized by Iwao Ojima. The...

and breastfeeding does not appear to be harmful. Amoxicillin is in the β-lactam family of antibiotics. Amoxicillin was discovered in 1958 and came into...

in bacteria. Using either of them with β-lactam antibiotics seems to be effective in mice against some β-lactam-resistant bacteria. Because the tarocins...

Clavulanic acid is a β-lactam drug that functions as a mechanism-based β-lactamase inhibitor. While not effective by itself as an antibiotic, when combined...

butyrolactam, is an organic compound consisting of a 5-membered lactam, making it the simplest γ-lactam. It is a colorless liquid that is miscible with water and...

to beta-lactam antibiotics. In bacterial resistance to beta-lactam antibiotics, the bacteria have beta-lactamase which degrade the beta-lactam rings, rendering...

horizontal gene transfer) a multiple drug resistance to beta-lactam antibiotics. Beta-lactam (β-lactam) antibiotics are a broad-spectrum group that include some...

ruthenium complexes, The compound, a colorless solid, is classified as a lactam. It is the monomer of nylon 5, a polyamide: n (CH2)4CONH → [HN(CH2)4CO)]n...

Vince lactam is the commercial name given to the bicyclic molecule γ-lactam 2-azabicyclo[2.2.1]hept-5-en-3-one. This lactam is a versatile chemical intermediate...

allergic reactions including anaphylaxis. Those who are allergic to other β-lactam antibiotics are more likely to be allergic to meropenem as well. Use in...

Methicillin (USAN), also known as meticillin (INN), is a narrow-spectrum β-lactam antibiotic of the penicillin class. Methicillin was discovered in 1960....

Cephamycins are a group of β-lactam antibiotics. They are very similar to cephalosporins, and the cephamycins are sometimes classified as cephalosporins...

the way by which the protein was discovered. All β-lactam antibiotics (except for tabtoxinine-β-lactam, which inhibits glutamine synthetase) bind to PBPs...

L-lysine 1,6-lactam + H2O ⇌ {\displaystyle \rightleftharpoons } L-lysine Thus, the two substrates of this enzyme are L-lysine 1,6-lactam and H2O, whereas...

organic compound with the formula (CH2)5C(O)NH. This colourless solid is a lactam (a cyclic amide) of caproic acid. Global demand for this compound is approximately...

generation cephalosporin that, like penicillins antibiotics, contains a β-lactam ring structure. Cephalosporins work as bactericidal antibiotics; that by...

helps form the bacterial cell wall. PBP2A has a lower affinity for beta-lactam antibiotics such as methicillin and penicillin than DD-transpeptidase does...

enzymology, a 2-aminohexano-6-lactam racemase (EC 5.1.1.15) is an enzyme that catalyzes the chemical reaction L-2-aminohexano-6-lactam ⇌ {\displaystyle \rightleftharpoons...

benzylpenicillin, hence the name). Like other penicillins and beta-lactam antibiotics, they contain a beta-lactam ring that is crucial to its antibacterial activity.[citation...

allergic reactions including anaphylaxis. Those who are allergic to other β-lactam have a low rate of allergy to aztreonam. Use in pregnancy appears to be...

to penicillins and cephalosporins, carbapenems are members of the beta-lactam antibiotics drug class, which kill bacteria by binding to penicillin-binding...

Lactivicin is a non-beta-lactam antibiotic that is active against a range of Gram-positive and Gram-negative bacteria. Lactivicin demonstrates a similar...