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Proteome nameProchlorococcus marinus MIT 9215
Proteome IDiUP000002014
StrainMIT 9215
Taxonomy93060 - Prochlorococcus marinus (strain MIT 9215)
Last modifiedFebruary 4, 2017
Genome assembly and annotationi GCA_000018065.1 from ENA/EMBL
Pan proteomei This proteome is part of the Prochlorococcus marinus subsp. pastoris (strain CCMP1986 / NIES-2087 / MED4) pan proteome (fasta)

Prochlorococcus, a fairly recently discovered cyanobacterium (1988), is the smallest known free-living photosynthetic prokaryote. Despite its small size it contributes significantly to global nutrient cycling. It is unique among cyanobacteria in using divinyl chlorophyll a and b as the major light-harvesting pigments, and harvests light with chlorophyll-binding antenna proteins (Pcb proteins) instead of the phycobilisomes used by most cyanobacteria. It is found in low- to mid-latitude oceans and seas, thriving in nutrient-poor waters and at greater depths than its close relative Synechococcus (down to 135m for Prochlorococcus, but only 95m for Synechococcus). Prochlorococcus can be differentiated into low-light (LL) and high-light (HL)-adapted ecotypes that have different physiologies and exist at different depths. Comparison of 12 whole genomes suggests the core genome contains about 1250 genes, while the pan-genome will have more than 5800 genes. This HL-adapted strain was isolated in October 1992 by filter fractionation from surface waters of the equatorial Pacific Ocean (5m depth). It grows best at 25.5 degrees Celsius, has a chlorophyll b/a ration of 0.30 and belongs to high chlorophyll b/a clade II.


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