protein:dry weight ratio 63±1%: carbon:dry weight ratio 54±1 %
||Meinhard Simon, Farooq Azam, Protein content and protein synthesis rates of planktonic marine bacteria. Marine ecology progress series. Oldendorf, 1989 Vol 51 pp.201-213 p.208 right column 2nd paragraph
||Abstract: "[Investigators] measured bacterial protein content and protein production of pelagic bacteria. Bacterial protein content was measured as amino acids by high performance liquid chromatography of cell hydrolysates of bacterial assemblages of mean diameters [note: this should probably read 'mean volumes'] from 0.026 to 0.4µm [should probably be 'from 0.026 to 0.4µm^3']."
||P.208 right column 2nd paragraph: "Interestingly, the protein:dry weight ratio remained essentially constant (63±1 %) throughout the range of cell sizes considered (Table 5). This value is within the range reported for large cultured bacteria (50 to 70 %, Herbert 1976 BNID 115319). Table 5 also shows that cell carbon is an essentially constant fraction (54±1 %) of dry weight and has a constant relationship with cell protein."