会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Mutant of RNA polymerases with increased stability
    • 增加稳定性的RNA聚合酶突变体
    • US06524828B1
    • 2003-02-25
    • US09857475
    • 2001-06-05
    • Hans LiaoBob van GemenAkio Sugiyama
    • Hans LiaoBob van GemenAkio Sugiyama
    • C12P1934
    • C12N9/1247C12Q1/6865
    • The present application relates to mutated RNA polymerases from bacteriophages that have increased stability, for example under high temperature conditions. One example of bacteriophage encoded RNA polymerase is the T7 RNA polymerase. T7 is a bacteriophage capable of infecting E. coli cells. Examples of other E. coli infecting T7-like bacteriophages are T3, øI, øII, W31, H, Y, A1, croC21, C22 and C23. An example of a Salmonella typhimurium infecting bacteriophage is SP6. The present invention is concerned with the RNA polymerases of T7-like bacteriophages that have been mutated. Due to these mutations the RNAP's have an increased stability. Preferred mutated RNA polymerases according to the invention are mutant RNA polymerases from T7 or SP3 bacteriophages. Due to the high homology between these enzymes, mutations in the T7 gene 1 sequence are likely to have the same effect in the corresponding gene sequence of the T3 bacteriophage. An especially preferred embodiment of the present invention is a T7 RNA polymerase with a serine to proline amino acid change in the protein at position 633 of the amino acid sequence. Since there is 80% homology between the T7 RNA polymerase and the T3 RNA polymerase the same effects of the 633 serine→proline mutation in the T7 gene may be expected for a 634 serine→proline amino acid mutation in the T3 RNA polymerase.
    • 本申请涉及来自具有增加的稳定性的噬菌体的突变的RNA聚合酶,例如在高温条件下。 噬菌体编码的RNA聚合酶的一个实例是T7RNA聚合酶。 T7是能够感染大肠杆菌细胞的噬菌体。 感染T7样噬菌体的其他大肠杆菌的实例是T3,øI,øII,W31,H,Y,A1,croC21,C22和C23。 鼠伤寒沙门氏菌感染噬菌体的一个例子是SP6。 本发明涉及已被突变的T7样噬菌体的RNA聚合酶。 由于这些突变,RNAP具有增加的稳定性。 根据本发明的优选的突变型RNA聚合酶是来自T7或SP3噬菌体的突变型RNA聚合酶。 由于这些酶之间的高同源性,T7基因1序列中的突变可能在T3噬菌体的相应基因序列中具有相同的作用。 本发明的特别优选的实施方案是具有丝氨酸以在氨基酸序列的633位的蛋白质中脯氨酸变化的T7RNA聚合酶。 由于T7 RNA聚合酶和T3 RNA聚合酶之间具有80%的同源性,所以T3 RNA聚合酶中634丝氨酸 - >脯氨酸氨基酸突变可能预期T7基因中63​​3丝氨酸 - >脯氨酸突变的相同作用。
    • 6. 发明授权
    • Reducing background in hybridization reactions
    • 减少杂交反应的背景
    • US06750014B2
    • 2004-06-15
    • US09785881
    • 2001-02-16
    • Marinus Petrus de BaarEveline Catherina A. C. TimmermansBob van Gemen
    • Marinus Petrus de BaarEveline Catherina A. C. TimmermansBob van Gemen
    • C12Q168
    • C12Q1/6827C12Q1/6832
    • The invention provides a method for reducing background in hybridization reactions of nucleic acids involving at least two homologous probes, wherein at least one of the probes is non-linear, or two homologous target sequences and a non-linear probe. Background is reduced by introducing an intended mismatch with a target sequence in at least one of the probes. The presence of the mismatch reduces the specificity of probes not entirely complementary to a target sequence to such an extent that the background signal is reduced. A set of mixed homologous probes, wherein at least one of the probes is non-linear, comprising such specific mismatch is also provided. The set can be used for the detection of variants of a family of nucleic acids, for instance a number of HIV variants. The invention also provides kits for carrying out the methods according to the invention.
    • 本发明提供了一种减少涉及至少两种同源探针的核酸的杂交反应背景的方法,其中至少一种探针是非线性的,或两个同源靶序列和非线性探针。 通过在至少一个探针中引入目标序列的预期错配来减少背景。 不匹配的存在降低了探针与靶序列不完全互补的特异性,使得背景信号降低的程度。 还提供了一组混合同源探针,其中至少一个探针是非线性的,包括这种特异性错配。 该组可用于检测核酸家族的变体,例如许多HIV变体。 本发明还提供了用于实施根据本发明的方法的试剂盒。
    • 7. 发明申请
    • Reducing background in hybridization reactions
    • 减少杂交反应的背景
    • US20050053963A1
    • 2005-03-10
    • US10751260
    • 2004-01-02
    • Marinus de BaarEveline TimmermansBob van Gemen
    • Marinus de BaarEveline TimmermansBob van Gemen
    • C12Q1/68C12Q1/6827C12Q1/6832
    • C12Q1/6827C12Q1/6832
    • The invention provides a method for reducing background in hybridization reactions of nucleic acids involving at least two homologous probes, wherein at least one of the probes is nonlinear, or two homologous target sequences and a nonlinear probe. Background is reduced by introducing an intended mismatch with a target sequence in at least one of the probes. The presence of the mismatch reduces the specificity of probes not entirely complementary to a target sequence to such an extent that the background signal is reduced. A set of mixed homologous probes, wherein at least one of the probes is nonlinear, comprising such specific mismatch is also provided. The set can be used for the detection of variants of a family of nucleic acids, for instance, a number of HIV variants. The invention also provides kits for carrying out the methods according to the invention.
    • 本发明提供了减少涉及至少两个同源探针的核酸的杂交反应背景的方法,其中至少一个探针是非线性的,或两个同源靶序列和非线性探针。 通过在至少一个探针中引入目标序列的预期错配来减少背景。 不匹配的存在降低了探针与靶序列不完全互补的特异性,使得背景信号降低的程度。 一组混合同源探针,其中至少一个探针是非线性的,还包括这种特异性失配。 该组可用于检测核酸家族的变体,例如许多HIV变体。 本发明还提供了用于实施根据本发明的方法的试剂盒。
    • 10. 发明申请
    • Method for quantifying a ratio between at least two nucleic acid sequences
    • 用于定量至少两个核酸序列之间的比率的方法
    • US20080182260A1
    • 2008-07-31
    • US11985463
    • 2007-11-15
    • Eveline C.A.C. TimmermansBob van Gemen
    • Eveline C.A.C. TimmermansBob van Gemen
    • C12Q1/68
    • C12Q1/6851C12Q2527/113C12Q2545/101C12Q2545/113C12Q2561/101
    • The invention provides a method for quantifying an initial ratio of the amounts of at least two nucleic acids of interest in a sample by means of a multiplex nucleic acid amplification reaction, comprising amplifying the nucleic acids of interest in the amplification reaction, measuring the amount of at least two nucleic acids of interest at at least two different time points in the reaction, determining from at least two of the measurements the amplification rate of the at least two nucleic acids of interest, comparing the rates with a reference, and determining from the comparison the initial ratio of the amounts of the at least two nucleic acids of interest in the sample. Preferably, at least one variable factor in the nucleic acid amplification reaction is adjusted in order to allow detectable levels of all nucleic acids of interest to be reached before an amplification and/or detection limit of one or more of the nucleic acids of interest is reached. With the invention, small differences between ratios can be determined, as can direct measurement of the initial nucleic acid ratio. The invention is suitable for determining functioning of a cellular organism, the staging of a disease, and therapeutic activity and/or possible side effects of a compound.
    • 本发明提供了一种通过多重核酸扩增反应量化样品中至少两种感兴趣的核酸的量的初始比例的方法,包括扩增扩增反应中目的核酸,测量 在所述反应中的至少两个不同时间点处至少两个感兴趣的核酸,从至少两个所述测量中确定所述至少两个感兴趣的核酸的扩增速率,将所述比率与参考值进行比较,并从 比较样品中目的的至少两种核酸的量的初始比例。 优选地,调节核酸扩增反应中的至少一个可变因子,以便在达到感兴趣的一种或多种感兴趣的核酸的扩增和/或检测限之前达到感兴趣的所有核酸的可检测水平 。 利用本发明,可以确定比率之间的小差异,直接测量初始核酸比例。 本发明适合于确定细胞生物的功能,疾病的分期以及化合物的治疗活性和/或可能的副作用。