Lactoferrin

Part of speech: noun

Definitions

  1. A multifunctional iron-binding glycoprotein found in various secretory fluids such as milk, saliva, and tears, known for its antimicrobial properties that help inhibit bacterial growth by sequestering iron ; a protein involved in immune system regulation and modulation that enhances host defense by limiting microbial access to iron and exhibiting anti-inflammatory effects ; a natural component of bodily secretions playing a critical role in iron homeostasis and protection against infections by binding iron tightly and preventing its use by pathogens
  2. An iron-carrying protein present in milk and other secretions that restricts bacterial proliferation by depriving them of iron ; a key player in innate immunity offering antimicrobial and anti-inflammatory benefits while modulating immune responses ; a glycoprotein that contributes to maintaining iron balance and protecting mucosal surfaces from microbial invasion through strong iron affinity
  3. A bioactive protein that binds iron in fluids like milk and mucous to prevent microbial growth and support immune functions ; a substance crucial for iron metabolism and defense against pathogens by limiting iron availability and promoting anti-infective responses ; an essential glycoprotein that aids in immune protection and inflammation control by managing iron distribution and inhibiting the growth of bacteria and fungi

Etymology: The name is a plain modern compound built from Latin. "Lac" (genitive "lactis") gives the lacto- part, meaning milk, and "ferrum" gives the ferr- part, meaning iron. The "-in" ending is the chemists' standard suffix for proteins. Its name therefore describes its two most notable traits: it occurs in milk and it binds iron. The name is a 20th-century coinage, not an ancient or classical term. Scientists isolated the protein from milk and named it for its iron-binding behaviour, so the word records a discovery rather than an older folk term. The iron-binding function it names is also why the same protein appears in tears, saliva and other mucous secretions, where it competes with invading microbes for iron.

Synonyms: iron-binding protein, milk protein