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Number of genes

Range	~1,900 genes
Organism	Prochlorococcus
Reference	Hopkinson BM, Young JN, Tansik AL, Binder BJ. The minimal CO2-concentrating mechanism of Prochlorococcus spp. MED4 is effective and efficient. Plant Physiol. 2014 Dec166(4):2205-17. doi: 10.1104/pp.114.247049. p.2205 left columnPubMed ID25315602
Comments	p.2205 left column:"At approximately 1,900 genes, the genomes of high-light-adapted Prochlorococcus spp. are the smallest known among photoautotrophs, suggesting that this is about the minimum number of genes needed to make a cell from inorganic constituents and light (Rocap et al., 2003). "
Entered by	Uri M
ID	111980