What does bacteriolysin mean?
Bacteriolysin is a substance, most often a bacterial enzyme, that causes bacterial cells to lyse, meaning that their protective walls or membranes break down and the cells rupture. It is studied in microbiology for its antibacterial properties and for its potential use against pathogenic or drug-resistant bacteria. The distinction between the agent and the process is important: a bacteriolysin produces bacteriolysis. In laboratory language, researchers may speak of bacteriolysin activity, production, or potency, particularly when testing whether bacteria or other microorganisms produce an effective lytic protein. The word belongs mainly to formal scientific and medical registers rather than everyday English. Although the broad sense can refer to any substance that destroys bacteria, the term is most often used for enzymes whose mechanism directly involves degrading bacterial cell-wall components or otherwise disrupting bacterial integrity.
nounA bactericidal substance, especially an enzyme, that causes bacteria to lyse by disrupting their cell walls or membranes. The term may also refer more broadly to any agent that brings about bacterial lysis.
- A substance, especially an enzyme, that causes the lysis of bacterial cells.
"The researchers measured bacteriolysin activity against cultures of drug-resistant bacteria."
"The assay measured bacteriolysin activity against cultures of drug-resistant bacteria."
"Researchers screened bacterial cultures for the production of a potent bacteriolysin."
The plural is used when referring to multiple distinct bacteriolysins or to the substance as a class.
"Several bacteriolysins produced by the strain showed strong activity against susceptible bacteria."
A bacteriolysin does more than attack a bacterium: it can make the bacterium's own defenses collapse from within.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does bacteriolysin come from?
The word is a scientific compound formed in English from the bacterio- element, associated with Greek baktrion meaning a rod or staff, and lysin, a derivative of Greek lysis, meaning a loosening or dissolving. The -lys- element reflects the biological process of lysis, in which a cell membrane or wall is disrupted. Its family includes words such as bacterium, bacteriology, bacteriophage, and bacteriosis, all built on the same bacterio- root.
How bacteriolysin is actually used
This is a specialized scientific and medical term used primarily in microbiology, microbiology research, and clinical or laboratory discussions. It is more precise than a general term for an antibacterial substance because it refers specifically to an agent associated with bacterial lysis.
Easily confused with bacteriolysin
Bacteriolysin is the substance that causes bacteria to lyse, whereas bacteriolysis is the process of bacterial cell disruption.