| 释义 |
lectin
lec·tin L0097250 (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.
[Latin lēctus, past participle of legere, to select; see select + -in.]lectin (ˈlɛktɪn) n (Biochemistry) a type of protein possessing high affinity for a specific sugar; lectins are often highly toxic[C20: from Latin lectus, past participle of legere to select + -in]lec•tin (ˈlɛk tɪn)
n. any of a group of proteins that bind to specific carbohydrates and act as an agglutinin. [1954; < Latin lēct(us), past participle of legere to gather, select, read + -in1] Thesaurus| Noun | 1. | lectin - any of several plant glycoproteins that act like specific antibodies but are not antibodies in that they are not evoked by an antigenic stimulusglycoprotein - a conjugated protein having a carbohydrate component |
lectin
lectin[′lek·tən] (biochemistry) Any of various proteins that agglutinate erythrocytes and other types of cells and also have other properties, including mitogenesis, agglutination of tumor cells, and toxicity toward animals; found widely in plants, predominantly in legumes, and also occurring in bacteria, fish, and invertebrates. lectin
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.lectin
Related to lectin: lecithinWords related to lectinnoun any of several plant glycoproteins that act like specific antibodies but are not antibodies in that they are not evoked by an antigenic stimulusRelated Words |