Optimization of coupled PCR amplification and cycle sequencing of cloned and genomic DNA.

We describe optimization of a coupled amplification and cycle sequencing (CAS) method for rapid characterization of cloned or genomic DNA. Our modification of this method, termed coupled PCR amplification and cycle sequencing (CPACS), utilizes commercially available reagents, does not require template purification and produces high-quality sequence ladders from nanogram quantities of complex genomic DNA. The reactions have been streamlined to permit automation.