Molecular mapping of glyW, a duplicate gene for tRNA3Gly of Escherichia coli.

By the use of [5'-32P]tRNA3Gly from Escherichia coli as a hybridization probe, glyW was located on cloned fragments of the uvrC pgsA region of the bacterial chromosome. After determination of the sites of action of several restriction enzymes, glyW was found to be within approximately 300 base pairs of pgsA. The order of genes in this region is uvrC, pgsA, glyW, flaI. Comparison of the order of determined restriction sites with the sites predicted from the nucleotide sequence of tRNA3Gly indicates that the direction of transcription of glyW is counterclockwise on the circular E. coli map.