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Proteome nameOstreococcus tauri - Reference proteome
Proteome IDiUP000009170
Taxonomy70448 - Ostreococcus tauri
Last modifiedFebruary 4, 2017
Genome assembly and annotationi GCA_000214015.2 from ENA/EMBL

The unicellular green maine alga Ostreococcus tauri (Prasinophyceae) is the world's smallest free-living eukaryote known to date, it also has the smallest plastid genome among photosynthetic Viridiplantae and encodes the fewest number of genes (January 2007). The chloroplast genome of O.tauri does not encode any of the NADH quinone oxidoreductase; these subunits are not found in the nuclear genome either. This alga does not synthesize chlorophyll in the dark and consequently chlB, chlL and chlN are not encoded in the chloroplast.


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Component nameGenome Accession(s)
Chromosome 1672
Chromosome 2532
Chromosome 3609
Chromosome 4560
Chromosome 5513
Chromosome 6467
Chromosome 7487
Chromosome 8432
Chromosome 9460
Chromosome 10357
Chromosome 11335
Chromosome 12319
Chromosome 13314
Chromosome 14344
Chromosome 15314
Chromosome 16305
Chromosome 17259
Chromosome 18205
Chromosome 1974
Chromosome 20100


  1. "The complete chloroplast and mitochondrial DNA sequence of Ostreococcus tauri: organelle genomes of the smallest eukaryote are examples of compaction."
    Robbens S., Derelle E., Ferraz C., Wuyts J., Moreau H., Van de Peer Y.
    Mol. Biol. Evol. 2007:956-968(2007) [PubMed] [Europe PMC] [Abstract]