Genetic connection of two contiguous bacterial artificial chromosomes using homologous recombination in Bacillus subtilis genome vector

A Bacillus subtilis genome (BGM) vector system using homologous recombination was applied to connect two contiguous BAC clones covering the entire 355-kb transcription unit of the mouse jumonji genomic region. Results from the convenient genomic manipulation indicated that the BGM system facilitates the connection of DNAs from a BAC library without exchange and deletion of original sequence, which can expand large-sized DNA construction beyond BAC-building in Escherichia coli.