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J Bacteriol. 1993 Jul;175(13):4245-9.

The ams-1 and rne-3071 temperature-sensitive mutations in the ams gene are in close proximity to each other and cause substitutions within a domain that resembles a product of the Escherichia coli mre locus.

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1
Department of Genetics, Stanford University School of Medicine, California 94305.

Abstract

Two temperature-sensitive mutations, ams-1 and rne-3071, in the ams (altered mRNA stability) gene have been used extensively to investigate the processing and decay of RNA in Escherichia coli. We have sequenced these temperature-sensitive alleles and found that the mutations are separated by only 6 nucleotides and cause conservative amino acid substitutions next to a possible nucleotide-binding site within the N-terminal domain of the Ams protein. Computer analysis revealed that the region altered by the mutations has extensive sequence similarity to a predicted gene product from the mre (murein pathway cluster e) locus of E. coli, which has been implicated previously in determining bacterial cell shape.

PMID:
8320240
PMCID:
PMC204856
[Indexed for MEDLINE]
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