lectin


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to lectin: lecithin

lectin

 [lek´tin]
a term applied to hemagglutinating substances present in saline extracts of certain plant seeds, which specifically agglutinate erythrocytes of certain blood groups or stimulate lymphocyte proliferation.

lec·tin

(lek'tin),
Any of a group of glycoproteins of primarily plant (usually seed) origin that binds to glycoproteins on the surface of cells causing agglutination, precipitation, or other phenomena resembling the action of specific antibody; lectins include plant agglutinins (phytoagglutinins, phytohemagglutinins), plant precipitins, and perhaps certain animal proteins; some have mitogenic properties and induce lymphocyte transformation.
[L. lego, pp. lectum, to select, + -in]

lectin

(lĕk′tĭn)
n.
Any of various proteins or glycoproteins that bind to the sugar molecules of glycoproteins and glucolipids on the surfaces of cells and are found in most organisms, especially plants. They are used to stimulate lymphocyte proliferation and to agglutinate red blood cells.

lec·tin

(lek'tin)
A protein of primarily plant (usually seed) origin that binds to glycoproteins on the surface of cells causing agglutination, precipitation, or other phenomena resembling the action of specific antibody; lectins include plant agglutinins (phytoagglutinins, phytohemagglutinins), plant precipitins, and perhaps some animal proteins; some have mitogenic properties.
[L. lego, pp. lectum, to select, + -in]

lectin

one of a group of proteins that specifically bind or crosslink carbohydrates. Lectins are poisonous compounds often produced in plants and their seeds, for example ricin is produced by beans of the castor plant Ricinus communis, and has the potential to be used as an agent of BIOLOGICAL WARFARE. If present in high amount (more than a few parts per thousand) in the body, lectins can cause blood clotting and interfere with the IMMUNE SYSTEM. Absorbed into the bloodstream they may cause cancer.
References in periodicals archive ?
Serous hemisphere, pars initialis, secretory, and excretory lectin immunoreactivity were positive.
Barnea & Cho (1982) found that luteinizing hormone (LH) and GnRH administration affects lectin receptor placement.
Some of single nucleotide polymorphisms are correlated with healthy complication, development of several disease and mannose binding lectin protein deficiency.
The glycan profiles of urinary protein from DN and NDRD patients were analyzed by a lectin microarray as described previously.[13],[14] Briefly, the lectin microarray was blocked with a blocking solution containing 3% BSA for 1 h.
Veenhoven et al., "Functional polymorphisms in the mannan-binding lectin 2 gene: Effect on MBL levels and otitis media," The Journal of Allergy and Clinical Immunology, vol.
Lectins are just one of a whole group of compounds that act as a defense system against invaders."
Extraction and purification of the lectin found in the tubers of Eranthis hyemalis (winter aconite).
Boiling beans for 30 minutes eradicates most, if not all, of the lectins. Note that soaking beans overnight does not remove enough lectin, and don't rely on slow cookers when cooking beans from scratch - the machine doesn't get hot enough to destroy lectins.
Govers, "Arabidopsis L-type lectin receptor kinases: phylogeny, classification, and expression profiles," Journal of Experimental Botany, vol.
Klein, "Deficiency of mannose-binding lectin and burden of infection in children with malignancy: a prospective study," The Lancet, vol.
A mycelial lectin from Aspergillus nidulans microfungi induced an increase of NO production, and IFN[gamma] and IL-6 levels also enhanced in splenocyte cultures from treated Swiss albino mice groups.