N-Terminal Quarter Part of Tetracycline Transporter from pACYC184 Complements K+ Uptake Activity in K+ Uptake-Deficient Mutants of Escherichia coli and Vibrio alginolyticus.
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چکیده
منابع مشابه
Hemin-deficient mutants of Escherichia coli K-12.
The occurrence of hemin-deficient bacterial mutants became known in 1953, when Jensen and Thofern (3) were able to isolate, by using streptomycin, a hemin-requiring mutant of Staphylococcus aureus. By their ability to grow as "small colony variants" (SCV), forming dwarf colonies in the absence of hemin, these mutants differ sharply from genuine conditioned lethal auxotrophic mutants, and resemb...
متن کاملLipopolysaccharide-deficient, bacteriophage-resistant mutants of Escherichia coli K-12.
Bacteriophage-resistant mutants isolated and classified in a previous study were examined for alterations in their lipopolysaccharide (LPS) composition, and properties likely to be affected by alterations in LPS composition were studied. It was found that many of the mutants of the Ktw (K2-resistance), Ttk (T2, T4, or K19 resistance), Bar (bacteriophage), Wrm (wide-range mutants), and miscellan...
متن کاملCharacterization of Pyruvate Uptake in Escherichia coli K-12
The monocarboxylate pyruvate is an important metabolite and can serve as sole carbon source for Escherichia coli. Although specific pyruvate transporters have been identified in two bacterial species, pyruvate transport is not well understood in E. coli. In the present study, pyruvate transport was investigated under different growth conditions. The transport of pyruvate shows specific activiti...
متن کاملEscherichia coli K-12 structural kdgT mutants exhibiting thermosensitive 2-keto-3-deoxy-D-gluconate uptake.
A specific method is described for selecting thermosensitive mutants of Escherichia coli K-12 able to grow on 2-keto-3-deoxy-D-gluconate (KDG) and D-glucuronate at 2, but not at 42 degrees C. The extensive analysis of one such mutant is consistent with the conclusion that the carrier molecule responsible for KDG and glucuronate uptake becomes thermolabile. (i) Growth on a variety of carbon sour...
متن کاملPhosphoglucomutase mutants of Escherichia coli K-12.
Bacteria with strongly depressed phosphoglucomutase (EC 2.7.5.1) activity are found among the mutants of Escherichia coli which, when grown on maltose, accumulate sufficient amylose to be detectable by iodine staining. These pgm mutants grow poorly on galactose but also accumulate amylose on this carbon source. Growth on lactose does not produce high amylose but, instead, results in the inducti...
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ژورنال
عنوان ژورنال: Biological and Pharmaceutical Bulletin
سال: 1995
ISSN: 0918-6158,1347-5215
DOI: 10.1248/bpb.18.1189