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    • 6. 发明授权
    • Method and apparatus for automated carbohydrate mapping and sequencing
    • 自动碳水化合物测绘和测序的方法和设备
    • US5798032A
    • 1998-08-25
    • US558047
    • 1995-11-13
    • Shaheer H. KhanRoger A. O'NeillLouis B. Hoff
    • Shaheer H. KhanRoger A. O'NeillLouis B. Hoff
    • G01N27/447C25B7/00C25B9/00
    • G01N27/44773G01N27/44743
    • Methods and apparatus are disclosed for improved mapping and sequencing of carbohydrate polymers. In one aspect, the improvement includes a means for coupling two capillary electrophoresis (CE) tubes in such a way so as to (i) efficiently transfer a selected sample component from a first CE capillary to a second CE capillary or, (ii) introduce a supplementary reagent into the separation path between the two capillaries, e.g., an internal standard, binding agent, enzyme, and the like. In an additional aspect, the invention includes improved apparatus and methods for electrophoresis of labeled carbohydrates in which a sample carbohydrate labeled with a first label is separated by CE and its migration behavior is compared with an internal standard labeled with one or more second labels which are distinguishable from the first label. In yet another aspect, the invention includes improved method and apparatus for sequencing carbohydrates in which a sample mixture is separated in a first CE dimension, a component of the sample mixture is selected, the selected component is incubated with an enzyme reagent, the reaction products are separated in a second CE dimension, the electrophoretic behavior of the reaction products is correlated with the known specificity of the enzyme reagent, and the process is repeated to determine the complete sequence of the carbohydrate sample.
    • 公开了用于改进碳水化合物聚合物的测绘和测序的方法和装置。 在一个方面,改进包括以这样的方式耦合两个毛细管电泳(CE)管的方法,以便(i)有效地将选定的样品组分从第一CE毛细管转移到第二CE毛细管,或者(ii)引入 在两个毛细管之间的分离路径中的补充试剂,例如内标,结合剂,酶等。 在另一方面,本发明包括用于电泳标记的碳水化合物的改进的装置和方法,其中用CE标记的样品碳水化合物被CE分离,并将其迁移行为与标记有一个或多个第二标记的内标进行比较 与第一个标签区分开来。 另一方面,本发明包括用于测序碳水化合物的改进方法和装置,其中样品混合物在第一CE维度上分离,选择样品混合物的组分,将所选择的组分与酶试剂一起温育,反应产物 在第二CE维度上分离,反应产物的电泳行为与酶试剂的已知特异性相关,并重复该过程以确定碳水化合物样品的完整序列。