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    • 1. 发明申请
    • Methods for quantification and de novo polypeptide sequencing by mass spectrometry
    • US20060020393A1
    • 2006-01-26
    • US11004570
    • 2004-12-02
    • David GoodlettAndrew Keller
    • David GoodlettAndrew Keller
    • G01N33/53
    • G01N33/6848
    • The invention provides a method of determining an amino acid sequence of a parent polypeptide. The method consists of: (a) obtaining mass spectra of two or more differentially labeled polypeptide fragments of a parent polypeptide; (b) assigning a mass and a weighting characteristic to two or more paired signals having a difference in mass corresponding to an integer value of said differential label, the weighting characteristic combining properties of each signal within said paired signals; (c) selecting from the mass spectra a paired signal having the assigned mass and a weighting characteristic distinguishable from non-peptide signals, the assigned mass indicating the mass of a polypeptide fragment within the spectra; (d) determining the difference in mass of the polypeptide fragments; (e) assigning the mass differences a satisfying amino acid name, and (f) orienting the assigned amino acid names. Also provided is a method of determining the amino acid sequence of a polypeptide. The method consists of: (a) constructing a graph from mass spectra of two or more differentially labeled polypeptides, the graph comprising a node with mass m, number of labels n, intensity i, and mass differential of labels δ; (b) creating a node corresponding to a paired signal having masses of about m and about m+nδ, and (c) adding a labeled weighted directed edge to the graph between any two nodes corresponding to a mass of an amino acid, the labeled weighted directed edge combining properties of the paired signals.
    • 2. 发明授权
    • Methods for quantification and de novo polypeptide sequencing by mass spectrometry
    • 通过质谱法进行定量和从头多肽测序的方法
    • US06829539B2
    • 2004-12-07
    • US09835072
    • 2001-04-13
    • David R. GoodlettAndrew Keller
    • David R. GoodlettAndrew Keller
    • G01N3348
    • G01N33/6848
    • The invention provides a method of determining an amino acid sequence of a parent polypeptide. The method consists of: (a) obtaining mass spectra of two or more differentially labeled polypeptide fragments of a parent polypeptide; (b) assigning a mass and a weighting characteristic to two or more paired signals having a difference in mass corresponding to an integer value of said differential label, the weighting characteristic combining properties of each signal within said paired signals; (c) selecting from the mass spectra a paired signal having the assigned mass and a weighting characteristic distinguishable from non-peptide signals, the assigned mass indicating the mass of a polypeptide fragment within the spectra; (d) determining the difference in mass of the polypeptide fragments; (e) assigning the mass differences a satisfying amino acid name, and (f) orienting the assigned amino acid names. Also provided is a method of determining the amino acid sequence of a polypeptide. The method consists of: (a) constructing a graph from mass spectra of two or more differentially labeled polypeptides, the graph comprising a node with mass m, number of labels n, intensity i, and mass differential of labels &dgr;; (b) creating a node corresponding to a paired signal having masses of about m and about m+n&dgr;, and (c) adding a labeled weighted directed edge to the graph between any two nodes corresponding to a mass of an amino acid, the labeled weighted directed edge combining properties of the paired signals.
    • 本发明提供了确定亲本多肽的氨基酸序列的方法。 该方法包括:(a)获得母体多肽的两个或更多个差异标记的多肽片段的质谱; (b)将质量和加权特性分配给具有与所述差分标签的整数值相对应的质量差异的两个或多个配对信号,所述加权特征组合所述成对信号内的每个信号的特性; (c)从质谱中选择具有分配质量的配对信号和与非肽信号可区分的加权特征,指定的质量指示光谱内的多肽片段的质量; (d)确定多肽片段的质量差异; (e)将质量差异指定为令人满意的氨基酸名称,和(f)定向所分配的氨基酸名称。 还提供了确定多肽的氨基酸序列的方法。 该方法包括:(a)从两个或更多个差异标记的多肽的质谱图构建图,该图包括质量m,标记数n,强度i和标记δ的质量差的节点; (b)创建对应于具有大约m和大约m + ndelta的质量的成对信号的节点,以及(c)在对应于氨基酸质量的任何两个节点之间的图表中添加标记的加权有向边缘, 配对信号的加权有向边组合属性。
    • 7. 发明授权
    • Extrusion process for preparing orientated polyolefins
    • 制备取向聚烯烃的挤出方法
    • US4948545A
    • 1990-08-14
    • US418992
    • 1989-10-06
    • Zahir BashirAndrew KellerJeffrey A. Odell
    • Zahir BashirAndrew KellerJeffrey A. Odell
    • B29C47/00B29C55/00B29C55/30B29K23/00C08F2/00C08F8/00C08F10/00D01F6/04D01F6/30
    • D01F6/04B29C55/00B29K2023/00
    • An orientated polyolefin composition comprising an olefin (co)polymer having a weight average molecular weight (Mw) from 30,000 to 1,000,000 and a high molecular weight tail extending to molelcular weights above 1,000,000, and has a microstructure which is substantially parallel chain extended cores of the component polymer(s) and associated lamellar overgrowths extending in planes normal to the cores in which the lamellar overgrowths on adjacent cores intermesh and are capable of sustaining a haul off tension of at least 10 MPa without breaking during its extrusion, is produced by extruding an olefin copolymer through a die under a pressure of about 5-10 MPa, at a temperature above the self-blocking temperature thereof and by hauling off the extrudate at a tension of at least 10 MPa without breaking. The extrudates so produced have a high modulus.
    • 一种取向的聚烯烃组合物,其包含重均分子量(Mw)为30,000至1,000,000的烯烃(共)聚合物和延伸至高于1,000,000的摩尔重量的高分子量尾部,并且具有基本平行的链延伸芯的微结构 组分聚合物和相关的层状过度生长在垂直于芯的平面中延伸,其中在相邻芯上的层状过度生长相互啮合并且能够在其挤出期间能够承受至少10MPa的牵引张力而不断裂,通过挤出 烯烃共聚物通过模具在约5-10MPa的压力下,在高于其自身阻塞温度的温度下,并且以至少10MPa的张力牵引挤出物而不破裂。 如此制造的挤出物具有高模量。