What does cecropin mean?
Cecropin is a noun referring to any of a group of small antimicrobial peptides first discovered in the cecropia moth. These peptides form part of an insect's innate immune system, destroying invading bacteria by binding to and disrupting their cell membranes. Since the original discovery in the early 1980s, numerous cecropins have been identified across many insect species, and laboratory-made analogues have been investigated as possible new weapons against antibiotic-resistant bacteria. The word itself derives from the cecropia moth, which is named after Cecrops, a legendary serpent-bodied king of ancient Athens. Because cecropin belongs firmly to the specialized vocabulary of molecular biology, it appears almost entirely in research papers and textbooks rather than everyday speech, but it has become emblematic of the broader class of host-defense peptides now central to immunology.
nounAny of a family of small antimicrobial peptides originally isolated from the hemolymph of the cecropia moth, which kill bacteria by disrupting their cell membranes.
- A small antimicrobial peptide produced by insects (originally the cecropia moth) as part of their innate immune defense.
"Cecropin was the first antimicrobial peptide to be discovered in insects."
"Researchers found that cecropin rapidly ruptured the membranes of E. coli cells."
"Synthetic analogues of cecropin are being studied as potential alternatives to conventional antibiotics."
Used both countably, for individual members or variants of the peptide family, and uncountably, for the substance in general.
"Several distinct cecropins were detected in the insect's hemolymph."
The word cecropin traces back to Cecrops, the mythical half-man, half-serpent king said to have founded Athens.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of cecropin
Cecropin was coined in the early 1980s when Swedish researchers isolated antibacterial peptides from the pupae of the cecropia moth (Hyalophora cecropia). The peptide takes its name directly from the moth, whose common name ultimately derives from Cecrops, the mythical half-serpent founder-king of Athens. The term entered scientific English through biochemical literature and has since been applied to homologous peptides identified in other insects.
How cecropin is actually used
Cecropin is a technical term used almost exclusively in biochemistry, microbiology, and immunology; it is rarely encountered in general prose. It typically appears in scientific writing discussing innate immunity or the development of novel antibiotics.
Easily confused with cecropin
Cecropia is the genus name for the cecropia moth and related trees, whereas cecropin is the antibacterial peptide derived from that moth's immune response.