Plastoquinone  (Synonyms: PQ-9)

Plastoquinone (PQ-9) is a photosynthetic electron carrier as well as a redox sensor capable of regulating state transitions and gene expression. Plastoquinone transfers electrons to the cytochrome b₆/f complex via the Q cycle, and participates in the establishment of the thylakoid transmembrane pH gradient. Plastoquinone can react with ROS. Plastoquinone is used in plant photosynthesis research^[1][2].

Plastoquinone is an essential component of photosynthesis that carries
electrons in the linear and alternative electron transport chains, and is also a
redox sensor that regulates state transitions and gene expression^[1].
Plastoquinone is involved both in
intersystem electron flow and in the establishment of the transthylakoidal pH gradient^[1].
Plastoquinone has been viewed as a photosynthetic electron carrier, shuttling electrons from PSII to cytochrome b6/f^[1].
Plastoquinone is capable of membrane diffusion and can therefore react with ROS in various photosynthetic electron transport chain regions where ROS are generated^[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

749.20

C₅₃H₈₀O₂

4299-57-4

C/C(C)=C\CC/C(C)=C/CC/C(C)=C/CC/C(C)=C/CC/C(C)=C/CC/C(C)=C/CC/C(C)=C/CC/C(C)=C/CC/C(C)=C/CC(C(C(C)=C1C)=O)=CC1=O

Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. Havaux M, et al. Plastoquinone In and Beyond Photosynthesis. Trends Plant Sci. 2020;25(12):1252-1265.  [Content Brief]

  [2]. Vetoshkina D V, et al. Antioxidant properties of plant plastoquinone in vivo and in vitro. Biophysics, 2024, 69(3): 445-458.