※ 引述《BTWu (kian)》之铭言： : 请问一下是否有人知道 : lectin 和selectin到底有什麽不同呢^^ Selectins 为表现在leukocytes、endothelial cells与platelets上的 carbohydrate-binding proteins，主要功能是调控leukocytes移动到各种组织。 分成L-selectin(CD62L)，L指的就是leukocyte E-selectin(CD62E)，E指的是endothelial cells P-selectin(CD62P)，P指的是platelets 可以参考一下这个图的说明 http://www.theses.ulaval.ca/2003/21038/21038027.jpg Lectin 来源： http://www.chem.qmul.ac.uk/iubmb/newsletter/misc/lectin.html 定义 A lectin is a sugar-binding protein of non-immune origin that agglutinates cells or precipitates glycoconjugates. Comments 1. A lectin molecule contains at least two sugar-binding sites; sugar-binding proteins with a single site will not agglutinate or precipitate structures that contain sugar residues, so are not classified as lectins. 2. The specificity of a lectin is usually defined by the monosaccharides or oligosaccharides that are best at inhibiting the agglutination or precipitation the lectin causes. 3. Lectins occur in many types of organism; they may be soluble or membrane-bound; they may be glycoproteins. 4. Sugar-specific enzymes, transport proteins and toxins may qualify as lectins if they have, multiple sugar-binding sites. -- ┌—☆╔═╕╒╦╕╔═╗╔═╗╘╦╕╥ ╥ ╥ ╔═╕╔═╕◇ ︵︵︵ ∣◇∣╚═╗ ║ ║ ║║ ║ ║ ║ ║ ║ ║ ╠╡ （ .. ）☆ ∣□∣ ║ ║ ╠═╣╠╤╝ ║ ║ ║ ║ ║ ║ （ ﹀ ）◆ ╰╥╯╘═╝ ╨ ╜ ╙╨╘═╘╝ ╚═╝ ╨ ╚═╛╚═╛★︶︶︶︶ ╨ ★☆★☆ 来一杯〝星果汁〞吧！让你暑气全消！★☆★☆ --

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