| Title |
Characteristics of the aerobic respiratory chains of the microaerophiles Campylobacter jejuni and Helicobacter pylori
|
|---|---|
| Published in |
Archives of Microbiology, August 2000
|
| DOI | 10.1007/s002030000174 |
| Pubmed ID | |
| Authors |
Mark A. Smith, Moshe Finel, Victoria Korolik, George L. Mendz |
| Abstract |
The respiratory chain enzymes of microaerophilic bacteria should play a major role in their adaptation to growth at low oxygen tensions. The genes encoding the putative NADH:quinone reductases (NDH-1), the ubiquinol:cytochrome c oxidoreductases (bc1 complex) and the terminal oxidases of the microaerophiles Campylobacter jejuni and Helicobacter pylori were analysed to identify structural elements that may be required for their unique energy metabolism. The gene clusters encoding NDH-1 in both C. jejuni and H. pylori lacked nuoE and nuoF, and in their place were genes encoding two unknown proteins. The NuoG subunit in these microaerophilic bacteria appeared to have an additional Fe-S cluster that is not present in NDH-1 from other organisms; but C. jejuni and H. pylori differed from each other in a cysteine-rich segment in this subunit, which is present in some but not all NDH-1. Both organisms lacked genes orthologous to those encoding NDH-2. The subunits of the bc1 complex of both bacteria were similar, and the Rieske Fe-S and cytochrome b subunits had significant similarity to those of Paracoccus denitrificans and Rhodobacter capsulatus, well-studied bacterial bc1 complexes. The composition of the terminal oxidases of C. jejuni and H. pylori was different; both bacteria had cytochrome cbb3 oxidases, but C. jejuni also contained a bd-type quinol oxidase. The primary structures of the major subunits of the cbb3-type (terminal) oxidase of C. jejuni and H. pylori indicated that they form a separate group within the cbb3 protein family. The implications of the results for the function of the enzymes and their adaptation to microaerophilic growth are discussed. |
Mendeley readers
The data shown below were compiled from readership statistics for 67 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Japan | 1 | 1% |
| United States | 1 | 1% |
| Denmark | 1 | 1% |
| Unknown | 64 | 96% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 17 | 25% |
| Researcher | 11 | 16% |
| Student > Bachelor | 6 | 9% |
| Student > Master | 5 | 7% |
| Professor | 3 | 4% |
| Other | 7 | 10% |
| Unknown | 18 | 27% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 24 | 36% |
| Biochemistry, Genetics and Molecular Biology | 10 | 15% |
| Immunology and Microbiology | 4 | 6% |
| Environmental Science | 3 | 4% |
| Chemistry | 2 | 3% |
| Other | 7 | 10% |
| Unknown | 17 | 25% |
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 05 April 2011.
All research outputs
#8,534,976
of 25,374,647 outputs
Outputs from Archives of Microbiology
#641
of 3,119 outputs
Outputs of similar age
#12,801
of 38,134 outputs
Outputs of similar age from Archives of Microbiology
#5
of 8 outputs
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So far Altmetric has tracked 3,119 research outputs from this source. They receive a mean Attention Score of 3.7. This one is in the 45th percentile – i.e., 45% of its peers scored the same or lower than it.
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We're also able to compare this research output to 8 others from the same source and published within six weeks on either side of this one. This one has scored higher than 3 of them.