Below is a brief overview of the key components of Iran's government and political system. At the top of Iran's power structure is the Supreme Leader, Ayatollah Ali Khamenei, who succeeded Ayatollah Ruhollah Khomeini, the father of the Iranian Revolution, upon Khomeini's death in 1989. Khomeini and Khamenei are the only two men to have held the office since the founding of the Islamic Republic in 1979.
NADH, short for nicotinamide adenine dinucleotide, is an important pyridine nucleotide that functions as an oxidative cofactor in eukaryotic cells.NADH plays a key role in the production of energy through redox reactions.icotinamide adenine dinucleotide (NAD) is one of the most important coenzymes in the cell. Not surprisingly, NAD and the closely related NADP are the two most abundant cofactors in eukaryotic cell.
Nicotinamide adenine dinucleotide (NAD) is a coenzyme found in all living cells. The compound is a dinucleotide, because it consists of two nucleotides joined through their phosphate groups. One nucleotide contains an adenine base and the other nicotinamide. Nicotinamide adenine dinucleotide exists in two forms, an oxidized and reduced form abbreviated as NAD+ and NADH respectively.