Abstract
We present a method for high-yield production of multimilligram amounts of pure single-stranded DNA employing rolling circle amplification (RCA) and processing by restriction enzymes. Pure and homogeneous samples are produced with minimal handling time, reagents, and waste products. The RCA method is more than twice as efficient in dNTP incorporation than conventional polymerase chain reaction in producing end product. The validity and utility of the method are demonstrated in the production of a uniformly 13C/15N-labeled 38-nt cocaine aptamer DNA used in nanosensing devices.
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