© 2000 by Kazusa DNA Research Institute
Random PCR-Based Genome Sequencing: A Non-Divide-and-Conquer Strategy
Department of Functional Materials Science, Saitama University Urawa, Saitama 338-8570, Japan
* To whom correspondence should be addressed. Tel. & Fax.: +81-48-858-3533, E-mail: koichi{at}fms.saitama-u.ac.jp
We propose a genome sequencing strategy, which is neither divide-and-conquer (clone by clone) nor the shotgun approach. Random PCR-based and PCR relay sequencing constitute the basis of this novel strategy. Most of the genome is sequenced by the former process that requires only a set of non-specific primers and a template DNA. Random PCR-based sequencing reduces redundancy in sequencing by exploiting known sequence information. The number of primers required for random PCR was significantly diminished by using a combination of primers. The former process can be partially replaced by the shotgun method, if necessary. The gap-filling process can be effectively performed by way of PCR relay. The feasibility of this strategy was demonstrated using the Escherichia coli genome. This strategy enhances the global effort towards genome sequencing by being available through the Internet and by allowing the use of preexisting sequence data.
Key words: genome sequencing; strategy; random PCR; PCR-relay; shotgun
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