EC Number   |
Inhibitors |
Structure |
|---|
    1.10.3.9 | 3-(3,4-dichlorophenyl)-1,1-dimethylurea |
- |
   |
| 1.10.3.9 | 3-(3,4-dichlorophenyl)-1,1-dimethylurea |
binds to plastoquinone binding site QB, 50% inhibition of signal in electron paramagnetic resonance spin-trapping spectroscopy using 5-(ethoxycarbonyl)-5-methyl-1-pyrroline N-oxide and inhibits photoreduction of the high-potential form of cytochrome b559 |
|
| 1.10.3.9 | 3-[3,4-dichlorophenyl]-1,1-dimethylurea |
stress factor inhibiting photosynthesis |
|
| 1.10.3.9 | 8-hydroxy-N-(3-methylphenyl)quinoline-2-carboxamide |
- |
|
| 1.10.3.9 | digalactosyldiacylglycerol |
minor influence on the reduction kinetics of plastoquinone QA |
|
| 1.10.3.9 | formate |
- |
|
| 1.10.3.9 | formate |
formate ligation to Fe2+ does not significantly affect the protonation of reduced Q, Fe2+ inhibits QBH2 release rather than its formation |
|
| 1.10.3.9 | monogalactosyldiacylglycerol |
minor influence on the reduction kinetics of plastoquinone QA |
|
| 1.10.3.9 | more |
light-induced oxidative stress leads to photoinactivation of the oxygen-evolving photosystem II. In contrast to model organisms, photosynthesis persists in Microcoleus sp. even at light intensities 2-3times higher than required to saturate oxygen evolution. This is despite an extensive loss (85-90%) of variable fluorescence and thermoluminescence, representing radiative PSII charge recombination that promotes the generation of damaging singlet oxygen. Light induced loss of variable fluorescence is not inhibited by the electron transfer inhibitors 3-(3,4-dichlorophenyl)-1,1-dimethylurea, 2,5-dibromo-3-methyl-6-isopropylbenzoquinone, nor the uncoupler carbonyl cyanide-p-trifluoromethoxyphenylhydrazone, thus indicating that reduction of plastoquinone or O2, or lumen acidification essential for non-photochemical quenching are not involved |
|
| 1.10.3.9 | more |
inhibitory efficiency of ring-substituted 8-hydroxyquinoline-2-carboxanilides depends on the compound lipophilicity, the electronic properties of the substituent R and the position of the substituent R on the benzene ring. Compounds probably bind the section between P680 and plastoquinone QB on the acceptor side of PS II |
|
