Coagulase

Part of speech: noun

Definitions

1. An enzyme produced by certain bacteria that causes blood plasma to clot by converting fibrinogen to fibrin; it plays a role in identifying bacterial strains; important in medical microbiology for distinguishing infections
2. A biological catalyst secreted by microbes that triggers coagulation by transforming soluble fibrinogen into insoluble fibrin strands; used as a diagnostic tool to detect specific bacteria; aids in pathogenesis by helping bacteria evade immune defenses
3. A protein enzyme found in some bacteria which induces the clotting of blood plasma by acting on fibrinogen; commonly used in laboratory tests to classify bacterial species; contributes to infection by promoting clot formation around the bacteria

Etymology: Coagulase is a short, technical name built by joining two existing pieces: "coagulation," the process by which a liquid such as blood thickens into a solid mass, and the suffix "-ase," which chemists attach to the names of enzymes. The result is a label for an enzyme that makes blood or plasma clot. The word is a blend, meaning its first part is clipped from a longer word and then fused with the second part, rather than being made by simply stacking two complete words together. The "-ase" ending follows the same pattern as many other enzyme names, such as amylase and lipase, where the suffix signals that the thing being named acts as a catalyst for a chemical change.