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  2. Tocotrienol - Wikipedia

    en.wikipedia.org/wiki/Tocotrienol

    Tocotrienols are named by analogy to tocopherols (from Greek words meaning to bear a pregnancy (see tocopherol); but with this word changed to include the chemical difference that tocotrienols are trienes, meaning that they share identical structure with the tocopherols except for the addition of the three double bonds to their side chains.

  3. γ-Tocotrienol - Wikipedia

    en.wikipedia.org/wiki/Γ-Tocotrienol

    γ-Tocotrienol is one of the four types of tocotrienol, a type of vitamin E. [ 1 ] [ 2 ] Vitamin E exists in nature in eight forms, each of which consists of a head section joined to either a saturated ( phytyl ) or an unsaturated ( farnesyl ) tail.

  4. α-Tocotrienol - Wikipedia

    en.wikipedia.org/wiki/Α-Tocotrienol

    α-Tocotrienol is a form of tocotrienol and one of the chemical compounds that is considered vitamin E. See also. β-Tocotrienol; γ-Tocotrienol; δ-Tocotrienol;

  5. Vitamin E - Wikipedia

    en.wikipedia.org/wiki/Vitamin_E

    Vitamin E is a group of eight compounds related in molecular structure that includes four tocopherols and four tocotrienols. The tocopherols function as fat-soluble antioxidants which may help protect cell membranes from reactive oxygen species. Vitamin E is classified as an essential nutrient for humans.

  6. Photosystem - Wikipedia

    en.wikipedia.org/wiki/Photosystem

    Light-dependent reactions of photosynthesis at the thylakoid membrane. Photosystems are functional and structural units of protein complexes involved in photosynthesis. Together they carry out the primary photochemistry of photosynthesis: the absorption of light and the transfer of energy and electrons.

  7. Photosynthetic reaction centre protein family - Wikipedia

    en.wikipedia.org/wiki/Photosynthetic_reaction...

    However, free viruses lack the machinery needed to support metabolism, let alone photosynthesis. As a result, photosystem genes are not likely to be a functional component of the virus like a capsid protein or tail fibre. Instead, it is expressed within an infected host cell.

  8. β-Tocotrienol - Wikipedia

    en.wikipedia.org/wiki/Β-Tocotrienol

    β-Tocotrienol is a tocotrienol, a member of vitamin E family. [1] [2] References This page was last edited on 12 January 2025 ...

  9. Photophosphorylation - Wikipedia

    en.wikipedia.org/wiki/Photophosphorylation

    The fact that a reaction is thermodynamically possible does not mean that it will actually occur. A mixture of hydrogen gas and oxygen gas does not spontaneously ignite. It is necessary either to supply an activation energy or to lower the intrinsic activation energy of the system, in order to make most biochemical reactions proceed at a useful ...