%0 Journal Article %A Spencer, M. E. %A Lebeter, V. M. %A Guest, J. R. %T Location of the Aspartase Gene (aspA) on the Linkage Map of Escherichia coliK12 %D 1976 %J Microbiology, %V 97 %N 1 %P 73-82 %@ 1465-2080 %R https://doi.org/10.1099/00221287-97-1-73 %I Microbiology Society, %X SUMMARY: The aspartase (l-aspartate ammonia-lyase, EC. 4.3.1.1) structural gene, aspA, was mapped by two-factor and three-factor transductional crosses using phage P1. Cotransduction frequencies between aspA and other markers were: ampA (69%); frdA (48 to 67%); mel (35%); purA (17%); fdp (1ยท6%). The sequence of markers within the corresponding segment (91 to 95 min) of the Escherichia coli linkage map was shown to be mel-aspA-ampA-frdA-purA-fdp. %U https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-97-1-73