TABLE 1.
Accumulation of PHA in recombinant E. coli strains carrying pET200 and pBTC2a
Strain | Plasmid(s) | Gene (relevant markers) | PHA content (% cell dry wt) | Composition (mol%)b
|
Mw | ||
---|---|---|---|---|---|---|---|
3HHx | 3HO | 3HD | |||||
MF4100 | pBTC2 | phaC+ | —c | — | — | ||
pBTC2, pET200 | phaC+, fabG+ | 2.8 | 10 | 90 | 0 | 48,200 | |
RS3338 | pBTC2 | phaC+ | — | — | — | ||
pBTC2, pET200 | phaC+, fabG+ | 3.1 | 9 | 91 | 0 | 51,100 | |
JMU193 | pBTC2 | phaC+ | 4.6 | 11 | 76 | 13 | 56,400 |
pBTC2, pET200 | phaC+, fabG+ | 5.2 | 10 | 77 | 13 | 52,700 | |
JMU194 | pBTC2 | phaC+ | 14.2 | 20 | 67 | 13 | 68,300 |
pBTC2, pET200 | phaC+, fabG+ | 20.6 | 23 | 65 | 12 | 67,000 |
E. coli recombinants were cultivated as described in the text. Determination of the PHA content and the PHA molecular weight was carried out as described previously (8, 11). Average data of three independent experiments are given.
3HHx, 3-hydroxyhexanoate; 3HO, 3-hydroxyoctanoate; 3HD, 3-hydroxydecanoate.
—, <0.1%.