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Plastoquinone (PQ) is a terpenoid-quinone (meroterpenoid) molecule involved in the electron transport chain in the light-dependent reactions of photosynthesis. The most common form of plastoquinone, known as PQ-A or PQ-9, is a 2,3-dimethyl-1,4- benzoquinone molecule with a side chain of nine isoprenyl units.
The electrons are transferred to plastoquinone and two protons, generating plastoquinol, which released into the membrane as a mobile electron carrier. This is the second core process in photosynthesis. The initial stages occur within picoseconds, with an efficiency of 100%. The seemingly impossible efficiency is due to the precise positioning ...
In 2018, Lee signed with TLC to have her own Dr. Pimple Popper TV series, which premiered on July 11. [18] A special Christmas episode of Dr. Pimple Popper, "The 12 Pops of Christmas", aired on December 13, 2018. Season 2 of Dr. Pimple Popper premiered in January 2019, and Season 3 premiered in the United States on July 11, 2019. [19]
Coenzyme Q 10 (CoQ 10 / ˌ k oʊ k j uː ˈ t ɛ n /), also known as ubiquinone, is a naturally occurring biochemical cofactor (coenzyme) and an antioxidant produced by the human body. [ 1 ] [ 2 ] [ 3 ] It can also be obtained from dietary sources, such as meat, fish, seed oils, vegetables, and dietary supplements .
The Q cycle (named for quinol) describes a series of sequential oxidation and reduction of the lipophilic electron carrier Coenzyme Q (CoQ) between the ubiquinol and ubiquinone forms. These reactions can result in the net movement of protons across a lipid bilayer (in the case of the mitochondria, the inner mitochondrial membrane ).
Photosystem II (or water-plastoquinone oxidoreductase) is the first protein complex in the energy-dependent reactions of oxygenic photosynthesis. It is located in the thylakoid membrane of plants , algae , and cyanobacteria .
Dr. Pimple Popper is an American reality television series airing on TLC. The series, starring dermatologist and Internet celebrity Dr. Sandra Lee, follows her as she treats patients with unusual cases of facial and skin disorders at her clinic Skin Physicians & Surgeons in the Inland Empire city of Upland, California. The show started with an ...
Dihydroorotate dehydrogenase (DHODH) is an enzyme that in humans is encoded by the DHODH gene on chromosome 16.The protein encoded by this gene catalyzes the fourth enzymatic step, the ubiquinone-mediated oxidation of dihydroorotate to orotate, in de novo pyrimidine biosynthesis.