Genome size (among the smallest known for a cell capable of a free-living existence)

Value 816 kb
Organism Bacteria Mycoplasma pneumoniae
Reference Hasselbring BM, Jordan JL, Krause RW, Krause DC. Terminal organelle development in the cell wall-less bacterium Mycoplasma pneumoniae. Proc Natl Acad Sci U S A. 2006 Oct 31 103(44):16478-83 p.16478 left column 2nd paragraphPubMed ID17062751
Comments "...at 816 kb the M. pneumoniae genome is among the smallest known for a cell capable of a free-living existence, lacking genes for cell wall production, de novo synthesis of nucleotides and amino acids, and two component or other common bacterial transcriptional regulators." Please see Wodke et al., 2013 PMID 23549481, p.2 left column 2nd paragraph: "It evolved by massive genome reduction, resulting in a single, small chromosome of only 816,394 base pairs, encoding 689 proteins (Himmelreich et al, 1996, Dandekar et al, 2000)." See BNID 105492
Entered by Uri M
ID 108333