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The frontier between cell and organelle: genome analysis of Candidatus Carsonella ruddii

Overview of attention for article published in BMC Evolutionary Biology, January 2007
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  • In the top 25% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (90th percentile)

Mentioned by

1 blog
1 tweeter
2 Wikipedia pages


86 Dimensions

Readers on

145 Mendeley
2 CiteULike
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The frontier between cell and organelle: genome analysis of Candidatus Carsonella ruddii
Published in
BMC Evolutionary Biology, January 2007
DOI 10.1186/1471-2148-7-181
Pubmed ID

Javier Tamames, Rosario Gil, Amparo Latorre, Juli Peretó, Francisco J Silva, Andrés Moya


Bacterial symbioses are widespread among insects. The early establishment of such symbiotic associations has probably been one of the key factors for the evolutionary success of insects, since it may have allowed access to novel ecological niches and to new imbalanced food resources, such as plant sap or blood. Several genomes of bacterial endosymbionts of different insect species have been recently sequenced, and their biology has been extensively studied. Recently, the complete genome sequence of Candidatus Carsonella ruddii, considered the primary endosymbiont of the psyllid Pachpsylla venusta, has been published. This genome consists of a circular chromosome of 159,662 bp and has been proposed as the smallest bacterial endosymbiont genome known to date. The detailed analysis of the gene content of C. ruddii shows that the extensive degradation of the genome is not compatible with its consideration as a mutualistic endosymbiont and, even more, as a living organism. The ability to perform most essential functions for a cell to be considered alive is heavily impaired by the lack of genes involved in DNA replication, transcription and translation. Furthermore, the shortening of genes causes, in some cases, the loss of essential domains and functional residues needed to fulfill such vital functions. In addition, at least half of the pathways towards the biosynthesis of essential amino acids, its proposed symbiotic function, are completely or partially lost. We propose that this strain of C. ruddii can be viewed as a further step towards the degeneration of the former primary endosymbiont and its transformation in a subcellular new entity between living cells and organelles. Although the transition of genes from C. ruddii to the host nucleus has been proposed, the amount of genes that should have been transferred to the germinal line of the insect would be so big that it would be more plausible to consider the implication of the mitochondrial machinery encoded in the insect nucleus. Furthermore, since most genes for the biosynthesis of essential amino acids have also been lost, it is likely that the host depends on another yet unidentified symbiont to complement its deficient diet.

Twitter Demographics

The data shown below were collected from the profile of 1 tweeter who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 145 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Spain 5 3%
United States 3 2%
Czechia 2 1%
Germany 2 1%
Mexico 2 1%
Finland 1 <1%
Denmark 1 <1%
Brazil 1 <1%
Puerto Rico 1 <1%
Other 1 <1%
Unknown 126 87%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 35 24%
Researcher 26 18%
Student > Master 18 12%
Student > Bachelor 17 12%
Professor 9 6%
Other 28 19%
Unknown 12 8%
Readers by discipline Count As %
Agricultural and Biological Sciences 85 59%
Biochemistry, Genetics and Molecular Biology 14 10%
Engineering 6 4%
Environmental Science 5 3%
Chemistry 4 3%
Other 9 6%
Unknown 22 15%

Attention Score in Context

This research output has an Altmetric Attention Score of 14. 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 26 May 2019.
All research outputs
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Outputs from BMC Evolutionary Biology
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Outputs of similar age
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Outputs of similar age from BMC Evolutionary Biology
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Altmetric has tracked 21,376,549 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 90th percentile: it's in the top 10% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 2,898 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 11.0. This one has done well, scoring higher than 82% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 142,706 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 90% of its contemporaries.
We're also able to compare this research output to 1 others from the same source and published within six weeks on either side of this one. This one has scored higher than all of them