Difference between isomer and naphthoquinone
- a compound that exists in forms having different arrangements of atoms but the same molecular weight
Similarly, in ketosteroid isomerase, Asp99 may catalyze proton transfers in the Asp38Ala variant [
Of the three classes of isomeric anhydrides which can be formed from hydroxybenzoic acids, the chemistry of the natural tannins is only concerned with the class comprising the ester anhydrides.
Therefore a ring opening step will be the first step catalyzed by isomerases for any pentose or hexose substrate.
- a fat-soluble vitamin that helps in the clotting of blood
The most common form of vitamin K2 in animals is menaquinone 4, produced by the processing of exogenous and bacterial naphthoquinones.
The most common form of vitamin K in animals is menaquinone 4, produced by intestinal bacteria from exogenous naphthoquinones and transformed endogenously in our own cells.