PMID:9696781
| Citation |
Tourneux, L, Bucurenci, N, Lascu, I, Sakamoto, H, Briand, G and Gilles, AM (1998) Substitution of an alanine residue for glycine 146 in TMP kinase from Escherichia coli is responsible for bacterial hypersensitivity to bromodeoxyuridine. J. Bacteriol. 180:4291-3 |
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| Abstract |
The wild-type TMP kinases from Escherichia coli and from a strain hypersensitive to 5-bromo-2'-deoxyuridine were characterized comparatively. The mutation at codon 146 causes the substitution of an alanine residue for glycine in the enzyme, which is accompanied by changes in the relative affinities for 5-Br-UMP and TMP compared to those of the wild-type TMP kinase. Plasmids carrying the wild-type tmk gene from Escherichia coli or Bacillus subtilis, but not the defective tmk gene, restored the resistance to bromodeoxyuridine of an E. coli mutant strain. |
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| Keywords |
Alanine/metabolism; Amino Acid Sequence; Amino Acid Substitution; Antimetabolites/pharmacology; Bromodeoxyuridine/pharmacology; Catalysis; Cloning, Molecular; Escherichia coli/drug effects; Escherichia coli/enzymology; Escherichia coli/genetics; Glycine/metabolism; Molecular Sequence Data; Nucleoside-Phosphate Kinase/genetics; Nucleoside-Phosphate Kinase/metabolism; Plasmids; Sequence Homology, Amino Acid; Transformation, Bacterial |
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