Method for protecting guanidino group and restoring the same
    54.
    发明授权
    Method for protecting guanidino group and restoring the same 失效
    保护guanidino组和恢复相同的方法

    公开(公告)号:US4368150A

    公开(公告)日:1983-01-11

    申请号:US233641

    申请日:1981-02-11

    CPC分类号: C07K1/064 C07K7/23

    摘要: A guanidino group in an amino acid or a peptide can be protected with a specific group, i.e. pentamethylbenzensulfonyl, 2,4,6-trimethoxybenzenesulfonyl, 4-methoxy-2,3,5,6-tetramethylbenzenesulfonyl, 4-methoxy-2,6-dimethylbenzenesulfonyl or 4-methoxy-2,3,6-trimethylbenzenesulfonyl, and said group may easily be removed without affecting the amino acid or the peptide to be derived from the protected amino acid or peptide. Thus, the present invention is useful in the synthesis of peptides containing the guanidino group.

    摘要翻译: 氨基酸或肽中的胍基可以用特定的基团来保护,即五甲基苯磺酰基,2,4,6-三甲氧基苯磺酰基,4-甲氧基-2,3,5,6-四甲基苯磺酰基,4-甲氧基-2,6 二甲基苯磺酰基或4-甲氧基-2,3,6-三甲基苯磺酰基,并且所述基团可以容易地除去而不影响衍生自被保护的氨基酸或肽的氨基酸或肽。 因此,本发明可用于合成含有胍基的肽。

    Phosphopeptide analysis method
    57.
    发明授权
    Phosphopeptide analysis method 有权
    磷酸肽分析方法

    公开(公告)号:US07892846B2

    公开(公告)日:2011-02-22

    申请号:US12269336

    申请日:2008-11-12

    IPC分类号: G01N33/00

    摘要: According to the present invention, a matrix reagent prepared by adding methylenediphosphonic acid (MDPNA) having two phosphonic acid groups as an additive to a matrix of 2,5-dihydroxybenzoic acid (DHBA) is used for the preparation of a sample. By using the sample according to the present invention, it is possible to achieve a higher peak intensity of phosphopeptide as compared with a sample in which DHBA is solely used as a matrix without using an additive, or a sample in which phosphoric acid (PA) is used as an additive in addition to DHBA. Further, use of the sample according to the present invention enables the detection of peptides that cannot be detected in a case of the phosphoric acid-added sample.

    摘要翻译: 根据本发明,通过将具有两个膦酸基的亚甲基二膦酸(MDPNA)作为添加剂添加到2,5-二羟基苯甲酸(DHBA)的基质中而制备的基质试剂用于制备样品。 通过使用根据本发明的样品,与仅使用DHBA作为基质而不使用添加剂的样品相比,可以实现更高的磷酸肽峰值强度,或者其中磷酸(PA) 除了DHBA之外还用作添加剂。 此外,根据本发明的样品的使用能够检测在添加磷酸的样品的情况下不能检测到的肽。

    PHOSPHOPEPTIDE ANALYSIS METHOD
    58.
    发明申请
    PHOSPHOPEPTIDE ANALYSIS METHOD 有权
    磷酸盐分析方法

    公开(公告)号:US20090137052A1

    公开(公告)日:2009-05-28

    申请号:US12269336

    申请日:2008-11-12

    IPC分类号: G01N33/50

    摘要: According to the present invention, a matrix reagent prepared by adding methylenediphosphonic acid (MDPNA) having two phosphonic acid groups as an additive to a matrix of 2,5-dihydroxybenzoic acid (DHBA) is used for the preparation of a sample. By using the sample according to the present invention, it is possible to achieve a higher peak intensity of phosphopeptide as compared with a sample in which DHBA is solely used as a matrix without using an additive, or a sample in which phosphoric acid (PA) is used as an additive in addition to DHBA. Further, use of the sample according to the present invention enables the detection of peptides that cannot be detected in a case of the phosphoric acid-added sample.

    摘要翻译: 根据本发明,通过将具有两个膦酸基的亚甲基二膦酸(MDPNA)作为添加剂添加到2,5-二羟基苯甲酸(DHBA)的基质中而制备的基质试剂用于制备样品。 通过使用根据本发明的样品,与仅使用DHBA作为基质而不使用添加剂的样品相比,可以实现更高的磷酸肽峰值强度,或者其中磷酸(PA) 除了DHBA之外还用作添加剂。 此外,根据本发明的样品的使用能够检测在添加磷酸的样品的情况下不能检测到的肽。

    Method for selective measurement of specific substances from a mixture by maldi mass spectrometry
    59.
    发明申请
    Method for selective measurement of specific substances from a mixture by maldi mass spectrometry 审中-公开
    通过maldi质谱法从混合物中选择性测定特定物质的方法

    公开(公告)号:US20060243899A1

    公开(公告)日:2006-11-02

    申请号:US11028230

    申请日:2005-01-04

    IPC分类号: B01D59/44

    摘要: The present invention provides a method which is capable of mainly detecting the objective substance by mass spectrometry and can also be applied effectively to a sample to be measured without conducting enrichment process. A mass spectrometric method comprising: in a mass spectrometry specifically ionizing a specific substance to be measured contained in a mixture sample containing the specific substance and a substance other than the specific substance by using a matrix that is more likely to ionize the specific substance than the substance other than the specific substance, to selectively measure the specific substance from the mixture. Preferably, the specific substance is a peptide modified with 2-nitrobenzenesulfenyl chloride, and the matrix is a nitrobenzene derivative such as hydroxynitrobenzoic acid. The matrix is preferably used in combination with α-cyano-4-hydroxycinnamic acid.

    摘要翻译: 本发明提供能够通过质谱法主要检测目标物质的方法,并且还可以在不进行富集过程的情况下有效地应用于要测量的样品。 一种质谱法,其特征在于,在通过使用比所述特定物质更可能离子化的基质更特别地电离含有特定物质的混合物样品和特定物质以外的物质的特定被测物质进行质谱分析 从特定物质以外的物质,选择性地测量混合物中的特定物质。 优选地,特定物质是用2-硝基苯硫酰氯修饰的肽,并且基质是硝基苯衍生物如羟基硝基苯甲酸。 该基质优选与α-氰基-4-羟基肉桂酸组合使用。

    Method for measuring hydrophobic peptides using maldi mass spectrometer
    60.
    发明申请
    Method for measuring hydrophobic peptides using maldi mass spectrometer 审中-公开
    使用maldi质谱仪测量疏水肽的方法

    公开(公告)号:US20050224710A1

    公开(公告)日:2005-10-13

    申请号:US11028216

    申请日:2005-01-04

    IPC分类号: G01N33/68 H01J49/16

    CPC分类号: H01J49/164 G01N33/6848

    摘要: The present invention provides a method capable of efficiently ionizing hydrophobic peptides in MALDI-IT, MALDI-IT-TOF, and MALDI-FTICR mass spectrometers. A method of measuring a peptide with a mass spectrometer having a MALDI (Matrix Assisted Laser Desorption/Ionization) ion source, using α-cyano-3-hydroxycinnamic acid or 3-hydroxy-4-nitrobenzoic acid as a matrix. Preferably, a peptide derivatized with 2-nitrobenzenesulfenyl chloride is measured with a MALDI-IT, MALDI-IT-TOF, or MALDI-FTICR mass spectrometer. When 3-hydroxy-4-nitrobenzoic acid is used as a matrix, the matrix is preferably used as a mixed matrix in which α-cyano-4-hydroxycinnamic acid is combined.

    摘要翻译: 本发明提供了能够有效地离子化MALDI-IT,MALDI-IT-TOF和MALDI-FTICR质谱仪中的疏水性肽的方法。 使用α-氰基-3-羟基肉桂酸或3-羟基-4-硝基苯甲酸作为基质的具有MALDI(Matrix Assisted Laser Desorption / Ionization)离子源的质谱仪测量肽的方法。 优选地,用MALDI-IT,MALDI-IT-TOF或MALDI-FTICR质谱仪测量用2-硝基苯硫基氯衍生的肽。 当使用3-羟基-4-硝基苯甲酸作为基质时,优选将基质用作混合基质,其中组合了α-氰基-4-羟基肉桂酸。