摘要:
A method for determining the presence or absence of a mutation on the basis of the presence or absence of amplification with high reliability is provided. A target sequence including a target site contained in a sample nucleic acid is amplified using a primer that can hybridize to a region including the target site contained in the sample nucleic acid in the presence of a novel MutS having an amino acid sequence of SEQ ID NO: 2, and then the presence or absence of a mutation at the target site is determined on the basis of the presence or absence of amplification. The novel MutS binds more specifically to a mismatched base pair than to a fully-matched base pair, whereby an extension reaction caused by a mismatch-binding primer is suppressed. Thus, according to the present invention, the presence or absence of a mutation can be determined with high reliability.
摘要翻译:提供了一种基于高可靠性的扩增的存在或不存在来确定突变的存在或不存在的方法。 包含样品核酸中包含的靶位点的靶序列使用可以在含有氨基酸序列SEQ ID NO的新型MutS的存在下与包含在样品核酸中的靶位点的区域杂交的引物进行扩增 :2,然后基于扩增的存在或不存在来确定靶位点处的突变的存在或不存在。 新的MutS更具体地结合失配的碱基对而不是完全匹配的碱基对,由此抑制由错配结合引物引起的延伸反应。 因此,根据本发明,可以高可靠性确定突变的存在或不存在。
摘要:
The present invention is to provide a pretreatment method that allows RNA to be detected promptly and simply. RNA degradation activity due to lactoferrin present in the human rhinal mucosa is inhibited, for example, by adding iron ion and carbonate ion to a biological sample that contains the human rhinal mucosa. With the pretreated biological sample, an RNA virus gene can be amplified by a reverse transcriptase. Iron ion and carbonate ion can also inhibit reverse transcriptase inhibition due to lysozyme C contained in the human rhinal mucosa. Further, it is preferable to remove the envelope of the RNA virus by adding SDS to the biological sample that contains the human rhinal mucosa.
摘要:
The present invention is to provide a pretreatment method that allows RNA to be detected promptly and simply. RNA degradation activity due to lactoferrin present in the human rhinal mucosa is inhibited, for example, by adding iron ion and carbonate ion to a biological sample that contains the human rhinal mucosa. With the pretreated biological sample, an RNA virus gene can be amplified by a reverse transcriptase. Iron ion and carbonate ion can also inhibit reverse transcriptase inhibition due to lysozyme C contained in the human rhinal mucosa. Further, it is preferable to remove the envelope of the RNA virus by adding SDS to the biological sample that contains the human rhinal mucosa.
摘要:
The present invention provides a primer set including primers that can be designed easily, with which an amplification distance can be shortened. Provided is a primer set for use in a method for isothermally amplifying a target nucleic acid sequence 4. The primer set includes a first primer 1F and a second primer 1R. The first primer 1F includes, on the 3′ side thereof, a sequence (A′) that can hybridize to a sequence (A) on the 3′ side of the target nucleic acid sequence. The second primer 1R includes, on the 3′ side thereof, a sequence (B′) that can hybridize to a sequence (B) on the 3′ side of either a strand extended from the first primer or a complementary strand of the target nucleic acid sequence 4. The first primer 1F and the second primer 1R include, on the 5′ sides thereof, sequences (C) that are substantially identical to each other.
摘要:
The present invention provides a primer set including primers that can be designed easily, with which an amplification distance can be shortened. Provided is a primer set for use in a method for isothermally amplifying a target nucleic acid sequence 4. The primer set includes a first primer 1F and a second primer 1R. The first primer 1F includes, on the 3′ side thereof, a sequence (A′) that can hybridize to a sequence (A) on the 3′ side of the target nucleic acid sequence. The second primer 1R includes, on the 3′ side thereof, a sequence (B′) that can hybridize to a sequence (B) on the 3′ side of either a strand extended from the first primer or a complementary strand of the target nucleic acid sequence 4. The first primer 1F and the second primer 1R include, on the 5′ sides thereof, sequences (C) that are substantially identical to each other.