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.
| Predicate | Object |
|---|---|
| rdf:type | |
| rdfs:comment |
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.
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| skos:exactMatch | |
| uniprot:name |
Science
|
| uniprot:author |
Baptista D.,
Bibbs L.,
Carrington J.C.,
Eads J.,
Giovannoni S.J.,
Givan S.,
Mathur E.J.,
Noordewier M.,
Podar M.,
Rappe M.S.,
Richardson T.H.,
Short J.M.,
Tripp H.J.,
Vergin K.L.
|
| uniprot:date |
2005
|
| uniprot:pages |
1242-1245
|
| uniprot:title |
Genome streamlining in a cosmopolitan oceanic bacterium.
|
| uniprot:volume |
309
|
| dc-term:identifier |
doi:10.1126/science.1114057
|