| Title |
An Escherichia coli mutant containing only demethylmenaquinone, but no menaquinone: effects on fumarate, dimethylsulfoxide, trimethylamine N-oxide and nitrate respiration
|
|---|---|
| Published in |
Archives of Microbiology, June 1992
|
| DOI | 10.1007/bf00249068 |
| Pubmed ID | |
| Authors |
U. Wissenbach, D. Ternes, G. Unden |
| Abstract |
The mutant strain AN70 (ubiE) of Escherichia coli which is known to lack ubiquinone (Young IG et al. 1971), was analyzed for menaquinone (MK) and demethylmenaquinone (DMK) contents. In contrast to the wild-type, strain AN70 contained only DMK, but no MK. The mutant strain was able to grow with fumarate, trimethylamine N-oxide (TMAO) and dimethylsulfoxide (DMSO), but not with nitrate as electron acceptor. The membranes catalyzed anaerobic respiration with fumarate and TMAO at 69 and 74% of wild-type rates. DMSO respiration was reduced to 38% of wild-type activities and nitrate respiration was missing (less than or equal to 8% of wild-type), although the respective enzymes were present in wild-type rates. The results complement earlier findings which demonstrated a role for DMK only in TMAO respiration (Wissenbach et al. 1990). It is concluded, that DMK (in addition to MK) can serve as a redox mediator in fumarate, TMAO and to some extent in DMSO respiration, but not in nitrate respiration. In strain AN70 (ubiE) the lack of ubiquinone (Q) is due to a defect in a specific methylation step of Q biosynthesis. Synthesis of MK from DMK appears to depend on the same gene (ubiE). |
Mendeley readers
The data shown below were compiled from readership statistics for 42 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Japan | 1 | 2% |
| Switzerland | 1 | 2% |
| Unknown | 40 | 95% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 9 | 21% |
| Student > Master | 7 | 17% |
| Student > Bachelor | 5 | 12% |
| Researcher | 4 | 10% |
| Student > Doctoral Student | 4 | 10% |
| Other | 4 | 10% |
| Unknown | 9 | 21% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 17 | 40% |
| Biochemistry, Genetics and Molecular Biology | 11 | 26% |
| Pharmacology, Toxicology and Pharmaceutical Science | 1 | 2% |
| Physics and Astronomy | 1 | 2% |
| Neuroscience | 1 | 2% |
| Other | 2 | 5% |
| Unknown | 9 | 21% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 15 February 2013.
All research outputs
#7,454,951
of 22,790,780 outputs
Outputs from Archives of Microbiology
#568
of 2,770 outputs
Outputs of similar age
#5,606
of 19,418 outputs
Outputs of similar age from Archives of Microbiology
#2
of 10 outputs
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