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    • 2. 发明授权
    • Optical probe for the cytochrome P-450 cholesterol side chain cleavage
enzyme
    • 光学探针为细胞色素P-450胆固醇侧链切割酶
    • US5208332A
    • 1993-05-04
    • US811217
    • 1991-12-20
    • Babetta L. MarroneDaniel J. SimpsonClifford J. UnkeferThomas W. Whaley
    • Babetta L. MarroneDaniel J. SimpsonClifford J. UnkeferThomas W. Whaley
    • C12Q1/60
    • C12Q1/60
    • An optical probe enables the study of enzyme activity by absorbance spectroscopy or by sensitive fluorescence methods. In particular, the probe provides the ability to monitor the activity of cytochrome P-450.sub.scc enzyme, the rate limiting enzyme for steroid biosynthesis. Located on the inner mitochondrial membrane, P-450.sub.scc catalyzes the conversion of cholesterol to pregnenolone and isocapraldehyde by sequential oxidations of the cholesterol side chain. The fluorogenic probe includes a cholesterol-like steroid linked to a chromophore through a linking group. The chromophore is selected to have little optical response when linked to the steroid substrate and an enhanced optical response when cleaved from the substrate and linking group. Thus, a fluorescent anion that can be optically detected is generated by the side-chain cleavage reaction during steroidogenesis.
    • 光学探针能够通过吸收光谱法或灵敏荧光法研究酶活性。 特别地,探针提供了监测细胞色素P-450scc酶的活性的能力,其是用于类固醇生物合成的限速酶。 位于内线粒体膜上,P-450scc通过胆固醇侧链的顺序氧化催化胆固醇转化为孕烯醇酮和异己醛。 荧光探针包括通过连接基团与发色团连接的胆固醇样类固醇。 选择发色团在与类固醇底物连接时具有很小的光学响应,并且当从底物和连接基团切割时具有增强的光学响应。 因此,可以通过在类固醇发生过程中的侧链切割反应产生可以被光学检测的荧光阴离子。
    • 3. 发明授权
    • Optical probe for the cytochrome P-450 cholesterol side chain cleavage
enzyme
    • 光学探针为细胞色素P-450胆固醇侧链切割酶
    • US5110725A
    • 1992-05-05
    • US680978
    • 1991-04-05
    • Babetta L. MarroneDaniel J. SimpsonClifford J. UnkeferThomas W. Whaley
    • Babetta L. MarroneDaniel J. SimpsonClifford J. UnkeferThomas W. Whaley
    • C12Q1/60
    • C12Q1/60
    • An optical probe enables the study of enzyme activity by absorbance spectroscopy or by sensitive fluorescence methods. In particular, the probe provides the ability to monitor the activity of cytochrome P-450.sub.scc enzyme, the rate limiting enzyme for steroid biosynthesis. Located on the inner mitochondrial membrane, P-450.sub.scc catalyzes the conversion of cholesterol to pregnenolone and isocapraldehyde by sequential oxidations of the cholesterol side chain. The fluorogenic probe includes a cholesterol-like steroid linked to a chromophore through a linking group. The chromophore is selected to have little optical response when linked to the steroid substrate and an enhanced optical response when cleaved from the substrate and linking group. Thus, a fluorescent anion that can be optically detected is generated by the side-chain cleavage reaction during steroidogenesis.
    • 光学探针能够通过吸收光谱法或灵敏荧光法研究酶活性。 特别地,探针提供了监测细胞色素P-450scc酶的活性的能力,其是用于类固醇生物合成的限速酶。 位于内线粒体膜上,P-450scc通过胆固醇侧链的顺序氧化催化胆固醇转化为孕烯醇酮和异己醛。 荧光探针包括通过连接基团与发色团连接的胆固醇样类固醇。 选择发色团在与类固醇底物连接时具有很小的光学响应,并且当从底物和连接基团切割时具有增强的光学响应。 因此,可以通过在类固醇发生过程中的侧链切割反应产生可以被光学检测的荧光阴离子。
    • 6. 发明授权
    • Lysate clearance and nucleic acid isolation using silanized silica matrices
    • 裂解液清除和使用硅烷化二氧化硅基质的核酸分离
    • US06787307B1
    • 2004-09-07
    • US09711782
    • 2000-11-13
    • Rex M. BitnerDaniel J. SimpsonRoderick G. FlemmingSusan C. Koller
    • Rex M. BitnerDaniel J. SimpsonRoderick G. FlemmingSusan C. Koller
    • C12Q168
    • C12N15/1006C12N1/02C12N15/1013C12Q1/6806Y10T436/143333
    • A method is provided for using a silanized silica matrix to isolate a target nucleic acids, such as plasmid DNA, fragments of DNA, chromosomal DNA, or RNA from contaminants, including proteins, lipids, cellular debris, or non-target nucleic acids. The silanized silica matrix comprises a silica based solid phase and a plurality of silane ligands covalently attached to the surface of the solid phase. Non-target material adsorbs to the silanized silica matrix in the presence of a sufficient concentration of chaotropic salt, while target nucleic acids adsorb to the matrix under other solution conditions. The method of using the silanized silica matrix of the present invention can be used to clear solutions of disrupted biological material, and to isolate nucleic acids therefrom or from other solutions containing nucleic acids and at least one contaminant.
    • 提供了一种使用硅烷化二氧化硅基质从污染物(包括蛋白质,脂质,细胞碎片或非目标核酸)分离靶核酸(如质粒DNA),DNA片段,染色体DNA或RNA的方法。 硅烷化二氧化硅基质包含二氧化硅基固相和共价连接到固相表面的多个硅烷配体。 非目标物质在足够浓度的离液盐存在下吸附到硅烷化二氧化硅基质上,而靶核酸在其它溶液条件下吸附到基质上。 使用本发明的硅烷化二氧化硅基质的方法可用于清除破坏的生物材料的溶液,并从其中分离核酸或从其它含有核酸和至少一种污染物的溶液中分离出核酸。
    • 8. 发明授权
    • Filter press with integrated radio frequency heating
    • 压滤机采用集成射频加热
    • US08535542B2
    • 2013-09-17
    • US12590150
    • 2009-11-02
    • Daniel J. SimpsonFerdinand Kogler
    • Daniel J. SimpsonFerdinand Kogler
    • B01D25/21B01D25/12
    • B01D25/284B01D25/164B01D25/215B01D25/285B01D25/322
    • A method of separating a mixture of liquid and insoluble solids in a filter press may comprise: pumping the mixture into a chamber between two filter plates in the filter press to form a filter cake, wherein the chamber is lined by filter cloths, and wherein, during the pumping, filtrate is forced through the filter cloths and out of the chamber; heating the filter cake in the chamber, wherein, during the heating, filtrate is forced through the filter cloths and out of the chamber, and wherein the heating is by radio frequency irradiation of the filter cake in the chamber; and releasing dried filter cake from the chamber. A filter press system for separating a mixture of liquid and insoluble solids may comprise: a frame; a plurality of filter plates configured to form a stack of parallel plates, each of the plurality of filter plates being movably attached to the frame, the plurality of filter plates further being configured to form a multiplicity of chambers, each of the multiplicity of chambers being lined by filter cloths, wherein the plurality of filter plates, the multiplicity of chambers and the filter cloths are configured to allow filtrate to escape from the chambers while retaining solids from the mixture to form a filter cake; and a radio frequency heater, for directly heating the filter cake in the multiplicity of chambers. The radio frequency heating may include microwave heating, or dielectric heating by lower frequency radio waves in the range of 1 to 100 MHz.
    • 在压滤机中分离液体和不溶性固体的混合物的方法可以包括:将混合物泵入压滤机中的两个过滤板之间的室中以形成滤饼,其中室由滤布排列,其中, 在泵送期间,滤液被迫通过滤布并离开室; 加热室中的滤饼,其中,在加热期间,滤液被迫通过滤布并离开室,并且其中加热是通过在该室中的滤饼的射频照射; 并从室中释放干燥的滤饼。 用于分离液体和不溶性固体的混合物的压滤机系统可以包括:框架; 多个过滤板被构造成形成一组平行板,所述多个过滤板中的每一个可移动地附接到所述框架,所述多个过滤板还构造成形成多个室,所述多个室中的每一个均为 由滤布排列,其中多个过滤板,多个室和滤布构造成允许滤液从室中逸出,同时保持来自混合物的固体以形成滤饼; 和用于直接加热多个室中的滤饼的射频加热器。 射频加热可以包括微波加热,或者通过1到100MHz范围内的低频无线电波的介电加热。