METHOD OF PREPARING PLANT-DERIVED PROTEINS
    1.
    发明申请
    METHOD OF PREPARING PLANT-DERIVED PROTEINS 审中-公开
    制备植物衍生蛋白的方法

    公开(公告)号:US20130067807A1

    公开(公告)日:2013-03-21

    申请号:US13497767

    申请日:2010-09-21

    摘要: Methods of preparing plant-derived proteins or suprastructure proteins, are provided. The method may comprise obtaining a plant, or plant matter comprising apoplast-localized proteins, or suprastructure proteins, producing a protoplast/spheroplast fraction and apoplast fraction from the plant or plant matter, and recovering the apoplast fraction. The apoplast fraction comprises plant-derived proteins or suprastructure proteins. Alternatively, the proteins, or suprastructure proteins, may be obtained from plant or plant matter comprising plant-derived proteins or suprastructure proteins, by digesting the plant matter using a cell wall degrading enzyme composition to produced a digested fraction. The digested fraction is filtered to produced a filtered fraction, and the plant-derived proteins or suprastructure proteins, are recovered from the filtered fraction.

    摘要翻译: 提供了制备植物衍生蛋白或超基质蛋白的方法。 该方法可以包括获得植物或包含质外体蛋白质定位蛋白质的植物物质或超基质蛋白,从植物或植物物质产生原生质体/原生质体级分和质外体级分,并回收载脂蛋白级分。 载脂蛋白级分包含植物来源的蛋白质或超基因蛋白质。 或者,可以通过使用细胞壁降解酶组合物消化植物物质以产生消化部分,从包含植物衍生的蛋白质或超基质蛋白质的植物或植物物质获得蛋白质或超基质蛋白质。 将消化的馏分过滤以产生过滤的馏分,从过滤的馏分中回收植物来源的蛋白质或超结构蛋白质。

    Immunoaffinity isolation of modified peptides from complex mixtures
    2.
    发明申请
    Immunoaffinity isolation of modified peptides from complex mixtures 审中-公开
    来自复杂混合物的修饰肽的免疫亲和分离

    公开(公告)号:US20110053242A1

    公开(公告)日:2011-03-03

    申请号:US11823775

    申请日:2007-06-28

    摘要: The invention provides methods for isolating a modified peptide from a complex mixture of peptides, the method comprising the steps of: (a) obtaining a proteinaceous preparation from an organism, wherein the preparation comprises modified peptides from two or more different proteins; (b) contacting the preparation with at least one immobilized modification-specific antibody; and (c) isolating at least one modified peptide specifically bound by the immobilized modification-specific antibody in step (b). The method may further comprise the step of (d) characterizing the modified peptide isolated in step (c) by mass spectrometry (MS), tandem mass spectrometry (MS-MS), and/or MS3 analysis, or the step of (e) utilizing a search program to substantially match the spectra obtained for the modified peptide during the characterization of step (d) with the spectra for a known peptide sequence, thereby identifying the parent protein(s) of the modified peptide. Also provided are an immunoaffinity isolation device comprising a modification-specific antibody, and antibodies against novel UFD1 and PTN6 phosphorylation sites.

    摘要翻译: 本发明提供了从复杂的肽混合物中分离修饰的肽的方法,所述方法包括以下步骤:(a)从生物体获得蛋白质制剂,其中所述制剂包含来自两种或更多种不同蛋白质的修饰肽; (b)使制剂与至少一种固定的修饰特异性抗体接触; 和(c)在步骤(b)中分离至少一种由固定的修饰特异性抗体特异性结合的修饰的肽。 该方法还可以包括以下步骤:(d)通过质谱(MS),串联质谱(MS-MS)和/或MS3分析表征步骤(c)中分离的修饰肽,或(e) 利用搜索程序将在步骤(d)表征期间获得的修饰肽的光谱与已知肽序列的光谱基本上匹配,从而鉴定修饰肽的亲本蛋白。 还提供了包含修饰特异性抗体和针对新型UFD1和PTN6磷酸化位点的抗体的免疫亲和分离装置。

    Method of producing LYS-plasminogen
    8.
    发明授权
    Method of producing LYS-plasminogen 失效
    生产LYS-纤溶酶原的方法

    公开(公告)号:US5556766A

    公开(公告)日:1996-09-17

    申请号:US292290

    申请日:1994-08-18

    CPC分类号: C12N9/6435 C12Y304/21007

    摘要: A process for preparing lys-plasminogen from blood plasma or blood plasma products having a specific activity of at least 17.5 caseinolytic units/mg protein and at lease 50 .mu.moles/g protein nitrogen as well as a an electrophoretic purity of at least 90% is presented. Cohn fraction III is obtained by phosphate precipitation from blood plasma or blood plasma products. A crude plasminogen fraction is then obtained by precipitating most non-plasminogen proteins with ethanol. The crude plasminogen is absorbed on immobilized lysine affinity column. Elution followed by precipitation obtains a purified plasminogen. The purified plasminogen is converted to lys-plasminogen with plasmin having an activity from 0.01 to 0.1 .mu.moles/ml min relative to chromogenic substrate H-D-Val-L-Leu-L-Lys-p-nitroanilide by dialyzing at a temperature of about 1.degree. to 20.degree. C. for a time period of about 6 to 60 hours. The conversion is interrupted by adding aprotinin. The resulting lys-plasminogen is lyophilized to produce a lyophilized lys-plasminogen.

    摘要翻译: 从具有至少17.5%酪蛋白溶解单位/ mg蛋白质的比活性和至少50μg/ g蛋白质氮的比活性以及至少90%的电泳纯度的血浆或血浆产物制备lys-纤溶酶原的方法是 呈现。 通过从血浆或血浆产物中的磷酸盐沉淀获得Cohn级分III。 然后通过用乙醇沉淀大多数非纤溶酶原蛋白来获得粗纤溶酶原级分。 粗纤溶酶原被固定化的赖氨酸亲和柱吸收。 洗脱后沉淀得到纯化的纤溶酶原。 通过在约1℃的温度下透析,相对于显色底物HD-Val-L-Leu-L-Lys-对硝基苯胺将纯化的纤溶酶原转化为具有0.01至0.1μmol/ ml min活性的纤溶酶的lys-纤溶酶原 在-20℃下,时间约6〜60小时。 转化通过加入抑肽酶中断。 将所得的溶血纤维蛋白溶酶原冻干,以产生冻干溶胞纤溶酶原。