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Microb Comp Genomics ; 3(4): 237-41, 1998.
Article in English | MEDLINE | ID: mdl-10027192

ABSTRACT

We have developed a 96-well format for DNA template isolation that can be readily automatable. The template isolation protocol involves simple alkaline lysis chemistry and reversible capture on a silica solid phase. After the cells are lysed, no centrifugation is necessary, as lysate purification, DNA binding, washing, and release occur in 96-well filter plates. Large numbers of templates prepared using the silica purification method have been sequenced and analyzed. The quality of sequence resulting from our method has been compared with that generated from several commercial plasmid preparation protocols. We found sequence quality of the silica bead preparations to be equivalent to or, in some cases, better than those prepared by other methods. This method offers many advantages over other protocols we have used. First, the silica purifications have allowed us to more than double overall laboratory throughput while decreasing our template isolation materials cost at least five-fold. Second, because we have eliminated all centrifugation steps in the protocol, automation has been much simpler. The protocol has also been adapted to purify PCR products for use as templates in subsequent sequencing reactions.


Subject(s)
DNA, Bacterial/genetics , DNA, Bacterial/isolation & purification , Plasmids/genetics , Sequence Analysis, DNA/methods , Automation , Cosmids/genetics , Molecular Biology/methods , Silicon Dioxide , Templates, Genetic
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