A method for sequencing a nucleic acid is provided. In certain embodiments the method comprises obtaining a duplex comprising a nucleic acid and a primer, wherein the primer has a nuclease resistant 3′ end, combining the duplex with a chain terminator nucleotide and a proof-reading polymerase to produce a reaction in which the polymerase idles on the added chain terminator nucleotide, identifying the chain terminator nucleotide added to the end of the primer; and adding a nuclease-resistant nucleotide to the end of the primer after the polymerase has idled on and removed the added chain terminator nucleotide, thereby producing a duplex comprising the template and an extended primer that has a nuclease resistant 3′ end.
本文提供了一种核酸测序方法。在某些实施方案中,该方法包括获得包含核酸和引物的双链体,其中引物具有抗
核酸酶的 3′末端;将双链体与链终止核苷酸和校对聚合酶结合以产生反应,其中聚合酶在添加的链终止核苷酸上空转,识别添加到引物末端的链终止核苷酸;在聚合酶空转并移除添加的链终止器核苷酸后,向引物末端添加抗
核酸酶核苷酸,从而产生由模板和具有抗
核酸酶 3′末端的扩展引物组成的双链。