Genome streamlining in a cosmopolitan oceanic bacterium.
Science
; 309(5738): 1242-5, 2005 Aug 19.
Article
in En
| MEDLINE
| ID: mdl-16109880
ABSTRACT
The SAR11 clade consists of very small, heterotrophic marine alpha-proteobacteria that are found throughout the oceans, where they account for about 25% of all microbial cells. Pelagibacter ubique, the first cultured member of this clade, has the smallest genome and encodes the smallest number of predicted open reading frames known for a free-living microorganism. In contrast to parasitic bacteria and archaea with small genomes, P. ubique has complete biosynthetic pathways for all 20 amino acids and all but a few cofactors. P. ubique has no pseudogenes, introns, transposons, extrachromosomal elements, or inteins; few paralogs; and the shortest intergenic spacers yet observed for any cell.
Search on Google
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Seawater
/
Genome, Bacterial
/
Alphaproteobacteria
Type of study:
Prognostic_studies
Language:
En
Journal:
Science
Year:
2005
Document type:
Article
Affiliation country:
United States