Organism | Tissue | Adenine | Thymine | Guanine | Cytosine | |
|---|---|---|---|---|---|---|
Escherichia coli (K12) | – | 26.0 | 23.9 | 24.9 | 25.2 | 1.00 |
Diplococcus pneumoniae | – | 29.8 | 31.6 | 20.5 | 18.0 | 1.59 |
Mycobacterium tuberculosis | – | 15.1 | 14.6 | 34.9 | 35.4 | 0.42 |
Yeast | – | 31.3 | 32.9 | 18.7 | 17.1 | 1.79 |
Paracentrotus lividus (sea urchin) | Sperm | 32.8 | 32.1 | 17.7 | 18.4 | 1.85 |
Herring | Sperm | 278 | 27.5 | 22.2 | 22.6 | 1.23 |
Rat | Bone marrow | 28.6 | 28.4 | 21.4 | 21.5 | 1.33 |
Human | Thymus | 30.9 | 29.4 | 19.9 | 19.8 | 1.52 |
Human | Liver | 30.3 | 30.3 | 19.5 | 19.9 | 1.53 |
Human | Sperm | 30.7 | 31.2 | 19.3 | 18.8 | 1.62 |
* Defined as moles of nitrogenous constituents per 100 Source: Data from E. Chargaff and J. Davidson, eds., The Nucleic Acids. Academic Press, 1955. | ||||||