Abstract
Lactoferrin is an iron-binding glycoprotein that consists of a single polypeptide chain with a molecular weight of 78 kDa. It is the second most abundant protein in human milk (~ 1g/l) (1,2) and is found in most exocrine secretions including tears, nasal secretions, saliva, intestinal mucus and genital secretions (3–5). The protein also is expressed and secreted by the secondary granules of polymorphonuclear neutrophils (6). The polypeptide structure of lactoferrin comprises two homologous domains that appear to have arisen by intragenic duplication (7). The crystal structure of the protein has been resolved (8,9) and it has been shown that each domain binds one ferric and one carbonate anion. In addition, each domain contains one glycosylated site to which N-linked glycan residues are attached (10).
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Abbreviations
- LPS:
-
lipopolysaccharides
- nLF:
-
native human lactoferrin
- rLF:
-
recombinant human lactoferrin
References
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Conneely, O.M., Ward, P.P., Zhou, X., Wagner, S. (1996). The role of lactoferrin in the gastrointestinal tract. In: Bindels, J.G., Goedhart, A.C., Visser, H.K.A. (eds) Recent Developments in Infant Nutrition. Tenth Nutricia Symposium, vol 9. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1790-3_25
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DOI: https://doi.org/10.1007/978-94-009-1790-3_25
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