ESCHERICHIA COLI K-12 AUXOTROPHS INDUCED BY INSERTION OF THE TRANSPOSABLE ELEMENT Tn5

[摘要] The siies of insertion of the transposable kanamycin-neomycin resistance determining element, T n 5, in the E. coli K-12 chromosome were assessed in a collection of over 300 auxotrophs. Although mutations in at least 45 different cistrons were obtained, the distribution of insertion sites was not completely random: proA or proB; cysG; and cysH, cysD or cysC mutants were found in excess.

[学科分类] 医学（综合）