Table 2.
Hopanoid composition of membrane fractions. Numbers represent the mean value of three replicates (µg/mg of total lipid extract). Typical standard deviation of the means were 25%, and the lower limit of detection was approximately 1 µg/mg.
| Cell Type | Membrane Fraction |
Hopanoid Structure | ||
|---|---|---|---|---|
| 1 | 2 | 3 | ||
| Vegetative | ||||
| Cytoplasmic | 0 | 0 | 0 | |
| Thylakoid | 1.7 | 1.7 | 1 | |
| Outer | 1.2 | 0 | 0 | |
| Vegetative from N-fixing culture |
||||
| Cytoplasmic | 0 | 0 | 0 | |
| Thylakoid | 0 | 0 | 2.4 | |
| Outer | 1.2 | 0 | 4.5 | |
| Heterocyst | ||||
| Cytoplasmic | 0 | 0 | 0 | |
| Thylakoid | 0 | 0 | 0 | |
| Outer | 0 | 0 | 2 | |
| Akinete | ||||
| Cytoplasmic | 0 | 0 | 0 | |
| Thylakoid | 2 | 2.1 | 0 | |
| Outer | 10.4 | 0 | 29.9 | |