Optically-Detectable Enzyme Substrates and Their Method of Use
    14.
    发明申请
    Optically-Detectable Enzyme Substrates and Their Method of Use 审中-公开
    光学检测酶底物及其使用方法

    公开(公告)号:US20160139135A1

    公开(公告)日:2016-05-19

    申请号:US14483392

    申请日:2014-09-11

    Abstract: The present invention relates to compounds that are substrates for an enzyme, and upon reaction with the enzyme provide a detectable response, such as an optically detectable response. In particular, the compounds have utility in detecting the presence of a β-lactamase in a sample. In addition to the compounds, methods are disclosed for analyzing a sample for the presence of a β-lactmase, for example, as an indicator of expression of a nucleic acid sequence including a sequence coding for a β-lactmase. Kits are disclosed that include the disclosed compounds and additional components, for example, cells, antibodies, a β-lactmase or instructions for using the components in an assay.

    Abstract translation: 本发明涉及作为酶的底物的化合物,并且在与酶反应时提供可检测的反应,例如可光学检测的反应。 特别地,这些化合物可用于检测样品中β-内酰胺酶的存在。 除了化合物之外,公开了用于分析样品存在β-乳糖酶的方法,例如,作为包括编码β-乳糖酶的序列的核酸序列的表达的指示剂。 公开了包括所公开的化合物和另外的组分的试剂盒,例如细胞,抗体,β-乳酸酶或在测定中使用组分的说明书。

    Site-specific labeling of affinity tags in fusion proteins
    15.
    发明授权
    Site-specific labeling of affinity tags in fusion proteins 有权
    融合蛋白中亲和标签的位点特异性标记

    公开(公告)号:US09164099B2

    公开(公告)日:2015-10-20

    申请号:US13890137

    申请日:2013-05-08

    Abstract: The present invention provides methods and fluorescent compounds that facilitate detecting and labeling of a fusion protein by being capable of selectively binding to an affinity tag. The fluorescent compounds have the general formula A(B)n, wherein A is a fluorophore, B is a binding domain that is a charged chemical moiety, a protein or fragment thereof and n is an integer from 1-6 with the proviso that the protein or fragment thereof not be an antibody or generated from an antibody. The present invention provides specific fluorescent compounds and methods used to detect and label fusion proteins that contain a poly-histidine affinity tag. These compounds have the general formula A(L)m(B)n wherein A is a fluorophore, L is a linker, B is an acetic acid binding domain, m is an integer from 1 to 4 and n is an integer from 1 to 6. The acetic acid groups interact directly with the positively charged histidine residues of the affinity tag to effectively label and detect a fusion protein containing such an affinity tag when present in an acidic or neutral environment.

    Abstract translation: 本发明提供了通过能够选择性地结合亲和标签来促进融合蛋白的检测和标记的方法和荧光化合物。 荧光化合物具有通式A(B)n,其中A是荧光团,B是作为带电化学部分的结合结构域,其蛋白质或片段,n是1-6的整数,条件是 蛋白质或其片段不是抗体或从抗体产生。 本发明提供用于检测和标记含有多组氨酸亲和标签的融合蛋白的特异性荧光化合物和方法。 这些化合物具有通式A(L)m(B)n,其中A是荧光团,L是连接体,B是乙酸结合域,m是1至4的整数,n是1至 乙酸基团与亲和标签的带正电荷的组氨酸残基直接相互作用,以有效地标记和检测当存在于酸性或中性环境中时含有这种亲和标签的融合蛋白。

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