Cephalosporinase

Part of speech: noun

Definitions

  1. An enzyme that hydrolyzes and deactivates cephalosporin antibiotics; a beta-lactamase specific for cephalosporins; a bacterial protein involved in antibiotic resistance mechanisms
  2. A type of enzyme produced by bacteria that breaks down cephalosporin drugs; a beta-lactamase variant targeting cephalosporin-class antibiotics; a molecule contributing to the inactivation of certain antibiotics
  3. An enzyme capable of degrading cephalosporin antibiotics to neutralize their effect; a cephalosporin-specific beta-lactamase that confers bacterial resistance; a substance that enzymatically modifies these antibiotics preventing their therapeutic action

Etymology: The term originated in the mid-20th century amid the surge of antibiotic research following the discovery of cephalosporin antibiotics. Scientists sought to understand bacterial resistance mechanisms, particularly enzymes capable of breaking down these novel drugs. The suffix "-ase," widely used in biochemistry, denotes enzymes, so this word was coined to name the enzyme that inactivates cephalosporins by hydrolyzing their beta-lactam ring. Cephalosporins themselves derive their name from the fungus Cephalosporium (now Acremonium), from which the first such antibiotic was isolated in the 1940s by Italian scientist Giuseppe Brotzu. The "-in" ending is typical for antibiotics, and the enzyme name builds on this by adding "-ase" to indicate its role in cleaving these compounds. The full construction thus signals an enzyme targeting cephalosporin molecules specifically. The middle segment, "cephalo-," traces back to the Greek "kephalē," meaning "head," a root used in various scientific terms related to the head or the foremost part of something. In cephalosporin, this is more of a historical artifact, tied to the original fungal genus name rather than a direct reference to the molecule’s structure. Over time, the word has come to represent a precise biochemical function rather than any morphological feature. The enzyme's discovery was crucial in understanding antibiotic resistance, a growing challenge in medicine. Naming it after the antibiotic it degrades helped clarify its role in bacterial survival against cephalosporin treatment. This naming convention, combining the target molecule's name with "-ase," is common in enzymology and helps provide immediate functional insight.

Synonyms: beta-lactamase, enzyme