| Title |
Seeing green bacteria in a new light: genomics-enabled studies of the photosynthetic apparatus in green sulfur bacteria and filamentous anoxygenic phototrophic bacteria
|
|---|---|
| Published in |
Archives of Microbiology, September 2004
|
| DOI | 10.1007/s00203-004-0718-9 |
| Pubmed ID | |
| Authors |
Niels-Ulrik Frigaard, Donald A. Bryant |
| Abstract |
Based upon their photosynthetic nature and the presence of a unique light-harvesting antenna structure, the chlorosome, the photosynthetic green bacteria are defined as a distinctive group in the Bacteria. However, members of the two taxa that comprise this group, the green sulfur bacteria (Chlorobi) and the filamentous anoxygenic phototrophic bacteria ("Chloroflexales"), are otherwise quite different, both physiologically and phylogenetically. This review summarizes how genome sequence information facilitated studies of the biosynthesis and function of the photosynthetic apparatus and the oxidation of inorganic sulfur compounds in two model organisms that represent these taxa, Chlorobium tepidum and Chloroflexus aurantiacus. The genes involved in bacteriochlorophyll (BChl) c and carotenoid biosynthesis in these two organisms were identified by sequence homology with known BChl a and carotenoid biosynthesis enzymes, gene cluster analysis in Cfx. aurantiacus, and gene inactivation studies in Chl. tepidum. Based on these results, BChl a and BChl c biosynthesis is similar in the two organisms, whereas carotenoid biosynthesis differs significantly. In agreement with its facultative anaerobic nature, Cfx. aurantiacus in some cases apparently produces structurally different enzymes for heme and BChl biosynthesis, in which one enzyme functions under anoxic conditions and the other performs the same reaction under oxic conditions. The Chl. tepidum mutants produced with modified BChl c and carotenoid species also allow the functions of these pigments to be studied in vivo. |
Mendeley readers
The data shown below were compiled from readership statistics for 116 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| France | 1 | <1% |
| Sweden | 1 | <1% |
| Belgium | 1 | <1% |
| Spain | 1 | <1% |
| United States | 1 | <1% |
| Unknown | 111 | 96% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 30 | 26% |
| Student > Ph. D. Student | 21 | 18% |
| Professor > Associate Professor | 13 | 11% |
| Student > Master | 13 | 11% |
| Student > Bachelor | 9 | 8% |
| Other | 16 | 14% |
| Unknown | 14 | 12% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 45 | 39% |
| Chemistry | 14 | 12% |
| Biochemistry, Genetics and Molecular Biology | 11 | 9% |
| Environmental Science | 10 | 9% |
| Immunology and Microbiology | 7 | 6% |
| Other | 13 | 11% |
| Unknown | 16 | 14% |
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 07 March 2016.
All research outputs
#7,451,942
of 22,782,096 outputs
Outputs from Archives of Microbiology
#568
of 2,770 outputs
Outputs of similar age
#19,267
of 58,946 outputs
Outputs of similar age from Archives of Microbiology
#5
of 13 outputs
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So far Altmetric has tracked 2,770 research outputs from this source. They receive a mean Attention Score of 3.7. This one is in the 42nd percentile – i.e., 42% of its peers scored the same or lower than it.
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