Table 3. Superoxide Production by Isolated Cytochrome b6f Complex from the Cyanobacterium, M. laminosus; Electron Acceptor, Cyanobacterial Plastocyanin.
Electron transfer rate, Cyt b6f-1 · s-1 | Superoxide production rate, Cyt b6f-1 · s-1 | Superoxide production rate (% electron transfer rate) | |
---|---|---|---|
Control, no inhibitor | 292 (n=2) | 6.3 (n=2) | 2.2 (n=2) |
NQNO, 5 μM | 174 (n=1) | 2.3 (n=1) | 2.2 (n=1) |
DBMIB, 2 μM | 6.5 ± 1.0 (n=3) | n.d. (n=6) | - |
DBMIB, 5 μM | 0.5 ± 0.7 (n=3) | n.d. (n=4) | - |
n, number of trials; n .d., not determined.