What is RPA?
概念：重組酶聚合酶擴增(Recombinase Polymerase Amplification，RPA)，被稱為是可以替代PCR的核酸檢測技術。RPA技術主要依賴于三種酶：能結合單鏈核酸(寡核苷酸引物)的重組酶、單鏈DNA結合蛋白(SSB)和鏈置換DNA聚合酶。這三種酶的混合物在常溫下也有活性，最佳反應溫度在37°C左右。
RPA技術原理：
重組酶與引物結合形成的蛋白-DNA復合物，能在雙鏈DNA中尋找同源序列。一旦引物定位了同源序列，就會發生鏈交換反應形成并啟動DNA合成，對模板上的目標區域進行指數式擴增。被替換的DNA鏈與SSB結合，防止進一步替換。在這個體系中，由兩個相對的引物起始一個合成事件。整個過程進行得非常快，一般可在十分鐘之內獲得可檢出水平的擴增產物。
Who uses RPA?
以此為基礎的TwistAmp? 核酸擴增產品，能夠在15分鐘內進行常溫下的單分子核酸檢測該技術對硬件設備的要求很低，特別適合用于體外診斷、獸醫、食品安全、生物安全、農業等領域。
RPA等溫擴增試劑盒配套試紙條發表的文獻
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