Envelope volume

Value 0.13 µm^3
Organism Bacteria Escherichia coli
Reference Calculated from electron microscopy measurements of envelope width taking cell volume as 1µm^3 assuming cell spherical shape
Primary Source Hobot JA, Carlemalm E, Villiger W, Kellenberger E. Periplasmic gel: new concept resulting from the reinvestigation of bacterial cell envelope ultrastructure by new methods. J Bacteriol. 1984 Oct160(1):143-52 Table - link PubMed ID6207168
Method Envelope volume was estimated according to cell volume of ~1fL (µm^3) BNID 100 004 assuming spherical shape of cell, and envelope width of 28.7 nm (Primary source, average of six values given in rightmost column of table link, BNID 104947): [Volume envelope]=[volume spherical cell]-[volume spherical cell without envelope]. 1µm^3=Volume cell=4p×[Radius cell]^3/3>>>Radius cell=[1µm^3×3/(4p)]^0.3333=0.62µm. Radius cell without envelpe=0.62-0.0287=0.592µm. volume envelope=1µm^3-4p×[0.592µm]^3/3=0.133µm^3
Comments Note: this value is similar to value of 0.16 µm^3 given by link Comments hereunder refer to value of 0.16µm^3. See BNID 104738
Entered by Ron Milo, Paul Jorgensen, Mike Springer
ID 100012