A new ribosomal mutation which affects the two ribosomal subunits in Escherichia coli. |
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Authors: | Christina Kennedy |
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Affiliation: | (1) ARC Unit of Nitrogen Fixation, University of Sussex, Falmer, BN1 9QJ Brighton, Sussex, England |
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Abstract: | Summary The nif cistrons indentified by complementation analysis in the preceding paper (Dixon et al., 1977) were mapped with respect to hisD and to each other by Pl cotransduction and three-factor reciprocal crosses. The order obtained was hisD nifB nifA (nifL) nifF nifE nifK nifD nifH. Analysis of hisD2-nif cotransduction data by the Wu equation (Wu, 1966) suggested that the nif genes are divided into two clusters: a his-proximal cluster comprising nifBA(L)F and a his-distal group of nifEKDH. |
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