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pubmed:abstractText |
We have constructed a complete, five-enzyme restriction map of the genome of the archaeon Halobacterium sp. GRB, based on a set of 84 overlapping cosmid clones. Fewer than 30 kbp, in three gaps, remain uncloned. The genome consists of five replicons: a chromosome (2038 kbp) and four plasmids (305, 90, 37, and 1.8 kbp). The genome of Halobacterium sp. GRB is similar in style to other halobacterial genomes by being partitioned among multiple replicons and by being mosaic in terms of nucleotide composition. It is unlike other halobacterial genomes, however, in lacking multicopy families of insertion sequences.
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