Potassium Transport Loci in Escherichia coli K-12

Journal of Bacteriology - Tập 108 Số 2 - Trang 639-644 - 1971
Wolfgang Epstein1, Byung‐Soo Kim1
1Department of Biochemistry, University of Chicago, Chicago, Illinois 60637

Tóm tắt

Mutants of Escherichia coli K-12 requiring considerably elevated concentrations of potassium for growth are readily obtained as double mutants combining a kdp mutation with a mutation in one or more of five other loci. These loci are referred to as trk , for transport of K, because these mutations result in alterations in K transport. The kdp mutation is essential in the isolation and identification of this type of mutant; in a Kdp + strain, the presence of a trk mutation does not prevent growth of the strain in media containing very low concentrations of K. The trk loci are widely scattered over the E. coli chromosome; none of them is very near any other trk locus or near the kdp genes.

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Tài liệu tham khảo

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Thông tin xuất bản

Journal of Bacteriology

Tập 108 Số 2

639-644

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