Pheophytin or phaeophytin is a chemical compound that serves as the first electron carrier intermediate in the electron transfer pathway of Photosystem II (PS II) in plants, and the type II photosynthetic …

Pheophytin a (Pheo) is the primary electron acceptor of PSII located toward the stromal side of the RC. It receives an electron from P680* in a few picoseconds to form a radical pair P680+Pheo−.

…the first acceptor may be pheophytin, which is a molecule similar to chlorophyll that also has a strong reducing potential and quickly transfers electrons to the next acceptor.

3-Phorbinepropanoic acid, 9-ethenyl-14-ethyl-21- (methoxycarbonyl)-4,8,13,18-tetramethyl-20-oxo-, (2E,7R,11R)-3,7,11,15-tetramethyl-2-hexadecen-1-yl ester, (3S,4S,21R)- Pheophytin a. Unless …

Dec 19, 2025 · Pheophytin is a form of chlorophyll a in which the magnesium ion is replaced by two hydrogen ions. It participates in the crucial step of converting light energy to chemical energy.

Pheophytin or Pheo is a chlorophyll molecule lacking a central Mg2+ ion which serves as the first electron carrier intermediate in the electron transfer pathway of photosystem II in plants and the …

Pheophytin or phaeophytin is a chemical compound that serves as the first electron carrier intermediate in the electron transfer pathway of Photosystem II (PS II) in plants, and the type II photosynthetic …

pheophytin The first electron acceptor in the light-dependent reactions of photosynthesis. It accepts an electron from the excited form of photosystem II (see photosystems I and II), and passes it on via …

The magnesium of chlorophyll is easily replaced by two hydrogen atoms in the presence of mild acids such as oxalic or acetic to produce a compound called pheophytin. Pheophytin a is a grayish green …

Pheophytin is often used in research to study the mechanisms of photosynthesis and the effects of environmental stress on plants. By analyzing the conversion of chlorophyll to pheophytin, scientists …