de Lares L B, Ratouchniak J, Casse F
Mol Gen Genet. 1977 Mar 28;152(1):105-8. doi: 10.1007/BF00264946.
Several mutants unable to utilize trehalose were isolated from Escherichia coli, Their genetic analysis led to determine the following gene order on the chromosomal map: pur B-dad R-tre-hem a-trp. Furthermore, the tre gene belongs to the inversion of the trp chromosomal region between E. coli and S. typhimurium.