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    • 2. 发明授权
    • Electrospray ionization mass spectrometer with new features
    • 具有新功能的电喷雾电离质谱仪
    • US4977320A
    • 1990-12-11
    • US467978
    • 1990-01-22
    • Swapan K. ChowdhuryViswanatham KattaBrian T. Chait
    • Swapan K. ChowdhuryViswanatham KattaBrian T. Chait
    • H01J49/04H01J49/10
    • H01J49/0404H01J49/044H01J49/0468H01J49/165
    • An electrospray ion source is designed for ready and simple plugging into commercial mass analyzers for mass spectrometric analysis of organic molecules. The electrospray is carried out is the ambient air and the ions and other charged species enter the mass analyuzer through a long metal capillary tube and three stages of differential pumping. The use of the long tube allows (a) convenient injection of the ions into the mass analyzer (b) optimization of the spray by direct visualization in the air (c) efficient and controlled heat transfer to the droplets and (d) efficient pumping of the region between the capillary exit and the skinner. Desolvation of the solvated ions is carried out using a combination of controlled heat transfer to the charged droplets during the transit through the tube and collisional activation in a region of reduced pressure. Desolvation with this system does not involve use of a strong countercurrent flow of heated gas. The system also may be used to obtain the collisional activated fragmentation spectra of molecule ions. The use of a metal capillary tube avoids complications from charging that arise from the use of dielectric capilliary tubes.
    • 电喷雾离子源设计用于准备和简单的插入商业质量分析仪,用于有机分子的质谱分析。 进行电喷雾是环境空气,离子和其他带电物质通过长金属毛细管进入质量分析仪和三级差动泵送。 使用长管允许(a)方便地将离子注入质量分析器中(b)通过在空气中直接可视化来优化喷雾(c)有效和可控制的热传递到液滴,以及(d)有效泵送 毛细管出口与皮肤之间的区域。 溶剂化离子的去溶剂使用在通过管的运输过程中受控的热传递到带电液滴和在减压区域中的碰撞活化的组合来进行。 该系统的去溶剂不涉及使用强逆流的加热气体。 该系统也可用于获得分子离子的碰撞激活的碎裂光谱。 使用金属毛细管避免了使用电介质毛细管引起的充电并发症。
    • 3. 发明授权
    • Ultra-sensitive detection systems using alterable peptide tags
    • 使用可变肽标签的超灵敏检测系统
    • US06824981B2
    • 2004-11-30
    • US09929266
    • 2001-08-13
    • Brian T. ChaitDarin R. LatimerPaul M. LizardiEric R. KershnarJon S. MorrowMatthew E. RothMartin J. MattessichKevin J. McConnell
    • Brian T. ChaitDarin R. LatimerPaul M. LizardiEric R. KershnarJon S. MorrowMatthew E. RothMartin J. MattessichKevin J. McConnell
    • C12Q168
    • G01N33/6842C07K1/047C07K1/1077C07K1/13C07K7/06C07K7/08G01N33/6803
    • Disclosed are compositions and methods for sensitive detection of one or multiple analytes. In general, the methods involve the use of special label components, referred to as reporter signals, that can be associated with, incorporated into, or otherwise linked to the analytes. In some embodiments, the reporter signals can be altered such that the altered forms of different reporter signals can be distinguished from each other. In some embodiments, sets of reporter signals can be used where two or more of the reporter signals in a set have one or more common properties that allow the reporter signals having the common property to be distinguished and/or separated from other molecules lacking the common property. In other embodiments, sets of reporter signal/analyte conjugates can be used where two or more of the reporter signal/analyte conjugates in a set have one or more common properties that allow the reporter signal/analyte conjugates having the common property to be distinguished and/or separated form other molecules lacking the common property. Reporter signals can also be in conjunction with analytes (such as in mixtures of reporter signals and analytes), where no significant physical association between the reporter signals and analytes occurs; or alone, where no analyte is present.
    • 公开了用于敏感检测一种或多种分析物的组合物和方法。 通常,这些方法涉及使用称为报告信号的特殊标记成分,其可以与分析物相关联,并入或以其它方式连接到分析物上。 在一些实施方案中,可以改变报道信号,使得不同报道信号的改变形式可以彼此区分。 在一些实施方案中,可以使用一组报告信号,其中一组中的两个或更多个报告基因信号具有一个或多个共同性质,其允许具有共同性质的报道信号被区分和/或与其他分子不相同 属性。 在其它实施方案中,可以使用组的报告信号/分析物缀合物,其中组中的两个或多个报道信号/分析物缀合物具有一个或多个共同性质,其允许区分具有共同性质的报道信号/分析物缀合物, /或分离形成其他缺乏共同性质的分子。 记者信号也可以与分析物(例如报告信号和分析物的混合物)结合,其中报告信号和分析物之间不存在明显的物理结合; 或单独存在,其中不存在分析物。
    • 6. 发明申请
    • Methods and Kits for Distinguishing Between Specific and Non-Specific Protein Associations
    • 用于区分特异性和非特异性蛋白质结合的方法和试剂盒
    • US20110217718A1
    • 2011-09-08
    • US13106490
    • 2011-05-12
    • Brian T. ChaitAlan J. TackettJeffrey A. DeGrasseMarlene OeffingerMichael P. RoutMatthew D. Sekedat
    • Brian T. ChaitAlan J. TackettJeffrey A. DeGrasseMarlene OeffingerMichael P. RoutMatthew D. Sekedat
    • G01N33/68
    • G01N33/5023G01N33/5032G01N33/60G01N33/6845G01N33/6848
    • The present invention is method of determining whether or not associations between a given protein and other proteins in a cell are specific. The method comprises (a) providing a first sample of the cells in which the given protein contains a tag, (b) providing a second sample of the same cells, wherein the given protein and the other proteins are metabolically labeled, and wherein neither the given protein nor the other proteins are tagged, (c) mixing and lysing the first cell sample and the second cell sample to provide a mixture of proteins, (d) binding the tag of the given protein to a substrate, (e) isolating proteins associated with the tagged given protein bound to the substrate, whereby the associated proteins comprise: (i) proteins specifically associated with the tagged given protein, (ii) proteins non-specifically associated with the tagged given protein, or (iii) a combination thereof, (f) determining whether each associated protein is unlabeled or a mixture of labeled and unlabeled proteins, wherein if the associated protein is not labeled, then that protein was specifically associated in the cell with the tagged given protein.
    • 本发明是确定细胞中给定蛋白质和其它蛋白质之间的缔合是否是特异性的方法。 该方法包括(a)提供其中给定蛋白质含有标签的细胞的第一样品,(b)提供相同细胞的第二样品,其中所述给定蛋白质和其它蛋白质被代谢标记,并且其中 (c)混合和裂解第一细胞样品和第二细胞样品以提供蛋白质的混合物,(d)将给定蛋白质的标签与底物结合,(e)分离蛋白质 与标记的给定蛋白质结合至底物,其中相关蛋白质包含:(i)与标记的给定蛋白质特异性相关的蛋白质,(ii)与标记的给定蛋白质非特异性相关的蛋白质,或(iii)其组合 ,(f)确定每个相关蛋白是否未标记,或标记蛋白和未标记蛋白质的混合物,其中如果相关蛋白未被标记,那么该蛋白质与标记特异性结合在细胞中 给定蛋白质。
    • 10. 发明授权
    • Methods and kits for distinguishing between specific and non-specific protein associations
    • 用于区分特异性和非特异性蛋白质关联的方法和试剂盒
    • US07968299B2
    • 2011-06-28
    • US11508736
    • 2006-08-21
    • Brian T. ChaitAlan J. TackettJeffrey A. DeGrasseMarlene OeffingerMichael P. RoutMatthew D. Sekedat
    • Brian T. ChaitAlan J. TackettJeffrey A. DeGrasseMarlene OeffingerMichael P. RoutMatthew D. Sekedat
    • G01N33/53
    • G01N33/5023G01N33/5032G01N33/60G01N33/6845G01N33/6848
    • The present invention is method of determining whether or not associations between a given protein and other proteins in a cell are specific. The method comprises (a) providing a first sample of the cells in which the given protein contains a tag, (b) providing a second sample of the same cells, wherein the given protein and the other proteins are metabolically labeled, and wherein neither the given protein nor the other proteins are tagged, (c) mixing and lysing the first cell sample and the second cell sample to provide a mixture of proteins, (d) binding the tag of the given protein to a substrate, (e) isolating proteins associated with the tagged given protein bound to the substrate, whereby the associated proteins comprise: (i) proteins specifically associated with the tagged given protein, (ii) proteins non-specifically associated with the tagged given protein, or (iii) a combination thereof, (f) determining whether each associated protein is unlabeled or a mixture of labeled and unlabeled proteins, wherein if the associated protein is not labeled, then that protein was specifically associated in the cell with the tagged given protein.
    • 本发明是确定细胞中给定蛋白质和其它蛋白质之间的缔合是否是特异性的方法。 该方法包括(a)提供其中给定蛋白质含有标签的细胞的第一样品,(b)提供相同细胞的第二样品,其中所述给定蛋白质和其它蛋白质代谢标记,并且其中 (c)混合和裂解第一细胞样品和第二细胞样品以提供蛋白质的混合物,(d)将给定蛋白质的标签与底物结合,(e)分离蛋白质 与标记的给定蛋白质结合至底物,其中相关蛋白质包含:(i)与标记的给定蛋白质特异性相关的蛋白质,(ii)与标记的给定蛋白质非特异性相关的蛋白质,或(iii)其组合 ,(f)确定每个相关蛋白是否未标记,或标记蛋白和未标记蛋白质的混合物,其中如果相关蛋白未被标记,那么该蛋白质与标记特异性结合在细胞中 给定蛋白质。