Author:
Lepesant-Kejzlarová J,Lepesant J A,Walle J,Billault A,Dedonder R
Abstract
A revision of the linkage map of the Bacillus subtilis 168 chromosome has been undertaken with the use of the generalized transducing phage PBS1. The mapping of four new markers (narB1, mtlB1, aroI906, and tre-12) has allowed a determination of the relative orientation of the purB-dal segment and its linkage with the lin markers. The chromosomal segment comprised between the sacQ36 and gtaA12 markers has been linked with the narA1, ctrA1, and sacA321 markers. The recA1 marker has been mapped relative to the thyA and citB17 markers. Indications of linkage have been found between the tre-12 and catA markers and the aroG932 and sacQ36 markers. According to these results, a circular genetic map of the chromosome of B. subtilis 168 is presented. Taken together, the transduction data and the order of marker replication determined by Harford in the accompanying paper support strongly the hypothesis of a symmetrical and fully bidirectional mode of replication for the B. subtilis 168 chromosome.
Publisher
American Society for Microbiology
Subject
Molecular Biology,Microbiology
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