Volume occupied by water

Value 70 % Range: Table - link %
Organism Bacteria Escherichia coli
Reference Neidhardt F.C. Escherichia coli and Salmonella: Cellular and Molecular Biology. Vol 1, ASM Press 1996. chapter 3 Chemical Composition of Escherichia coli table 1, note 'c' beneath table
Primary Source Cayley S, Lewis BA, Guttman HJ, Record MT Jr. Characterization of the cytoplasm of Escherichia coli K-12 as a function of external osmolarity. Implications for protein-DNA interactions in vivo. J Mol Biol. 1991 Nov 20 222(2):281-300PubMed ID1960728
Method Note-in note 'c' beneath table the primary source is cited as assuming that 70% of cell weight is water, however this value wasn't located in primary source.
Comments For water content of 74% see BNID 105482. Table gives general information on quantities of macromolecules per cell. Note 'c': "The wet weight is calculated from the assumption that 70% of E. coli protoplasm is water. The total dry weight per cell is 2.8×10^-13 g. The water content (assuming that 70% of the cell is water [primary source]) is 6.7×10^-13 g The total weight of one cell is 9.5×10^-13 g." For water fraction by volume in yeast and mammalian cell see BNID 105094, 103960, respectively. For water fraction by mass in yeast see BNID 103689
Entered by Ron Milo, Paul Jorgensen, Mike Springer
ID 100044