#electron transfer

[whats-in-a-sentence]

The majority of the pigments serve as an antenna complex, collecting light and transferring the energy to the reaction center complex, where the chemical oxidation and reduction reactions leading to long-term energy storage take place (Figure 7.10).

"Plant Physiology and Development" int'l 6e - Taiz, L., Zeiger, E., Møller, I.M., Murphy, A.

[johniac]

SciTech Chronicles. . . . . . . . .September 27th, 2025

SciTech Chronicles. . . . . . . . .September 27th, 2025

Vol III Issue 69 Conscience is that inner voice that warns us that someone may be looking. Today, xxx links Curated Mission Control RSS Feed

[circumlocutive]

I need to understaaaaand but I feel so dumb rn

Any electrochemistry/material science/photo physics/physical chemists/electrical engineers amongst my mutuals I have a quastion about a hole electron pair generator embedded in a dielectric

[whats-in-a-sentence]

The electron transport chain of plants contains the same set of electron carriers found in the mitochondria of other organisms (Figure 12.8). (...) Two protons are pumped out of the matrix per electron pair (see Figure 12.8). (...) In addition to the set of protein complexes describes above, the plant electron transport chain contains components not found in mammalian mitochondria (see Figure 12.8). (...) The FOF1-ATP synthase (also called complex V) consists of two major components, FO and F1 (see Figure 12.8). (...) Electrons feed off the main electron transport chain into this alternative pathway at the level of the ubiquinone pool (see Figure 12.8). (...) By draining off electrons from the ubiquinone pool (see Figure 12.8), the alternative pathway prevents overreduction, thus limiting the production of ROS and minimizing the detrimental effects of stress on respiration.

"Plant Physiology and Development" int'l 6e - Taiz, L., Zeiger, E., Møller, I.M., Murphy, A.

[whats-in-a-sentence]

Electrons are transferred through centers A and B to ferredoxin (Fd), a small, water-soluble iron-sulfur protein (see Figures 7.19 and 7.27).

"Plant Physiology and Development" int'l 6e - Taiz, L., Zeiger, E., Møller, I.M., Murphy, A.

[whats-in-a-sentence]

The PSI reaction center complex is a large multi-subunit complex (Figure 7.27). (...) The PSI reaction center complex from pea contains four LHCI complexes in addition to the core structure similar to that found in cyanobacteria (see Figure 7.27). (...) Additional electron acceptors include a series of three membrane-associated iron-sulfur proteins, also known as Fe-S centers: FeSX, FeSA, and FeSB (see Figure 7.27).

"Plant Physiology and Development" int'l 6e - Taiz, L., Zeiger, E., Møller, I.M., Murphy, A.

[whats-in-a-sentence]

These four integral membrane complexes are vectorially oriented in the thylakoid membrane to function as follows (Figure 7.20; also see Figure 7.16):

PSII oxidizes water to O2 in the thylakoid lumen and in the process releases protons into the lumen. The reduced product of photosystem II is plastohydroquinone (PQH2).

Cytochrome b6f oxidizes PQH2 molecules that were reduced by PSII and delivered electrons to PSI via the soluble copper protein plastocyanin. The oxidation of PQH2 is coupled to proton transfer into the lumen from the stroma, generating a proton motive force.

PSI reduces NADP+ to NADPH in the stroma by the action of ferredoxin (Fd) and the flavoprotein ferredoxin-NADP+ reductase (FNR).

ATP synthase produces ATP as protons diffuse back through it from the lumen into the stroma.

"Plant Physiology and Development" int'l 6e - Taiz, L., Zeiger, E., Møller, I.M., Murphy, A.

[tenth-sentence]

Cytochrome f then transfers an electron to the blue-colored copper protein plastocyanin (PC), which in turn reduces oxidized P700 of PSI.

"Plant Physiology and Development" int'l 6e - Taiz, L., Zeiger, E., Møller, I.M., Murphy, A.