Number of all proteins in average cell of E. coli B/r at 37° celsius in aerobic glucose with a 40 minute mass doubling time

Value 2.35e+6 Unitless Range: Table - link Unitless
Organism Bacteria Escherichia coli
Reference Neidhardt and Umbarger chapter 3 in Neidhardt F.C. Escherichia coli and Salmonella: Cellular and Molecular Biology. Vol 1. ASM Press 1996. table 1
Comments This cell is 44% through its division cycle. Note-according to table (BNID 105861) average protein mass in E. coli is 40kDa=[4×10^4/(6×10^23)]g=6.7×10^-20g. Concentration of protein in this E. coli cell taking cell volume as 10^-15 liter (BNID 100 004) would be [(2.35×10^6proteins/cell)×(6.7×10^-20g/protein)]/[10^-15liter/cell]˜160g/liter˜160mg/ml. Note-2.35e+6 regards proteins as monomers whereas most are probably tetramers (BNID 100020), giving an actual total of ~400,000 proteins/cell. See BNID 100085.
Entered by Ron Milo, Paul Jorgensen, Mike Springer
ID 100088